What to improve at my rating ?

I'm around 1400 recently and I think my games are getting pretty intense, when blunders are not happening it just feels like a back and forth of pieces trading and the position which results of this is almost always equal. I'm at a point where me and my opponents don't let pieces en prise and we don't blunder mate in 1(most of the time). I feel kinda stuck in my progress, I've been in the 1300s for about a year before ranking up again slightly to reach 1400 , a progress that I attribute to endgame study(I felt I needed to do that because more and more games were reaching this point now). I played some games against higher rated players(1600-1700) and I've never won any, they always seem to make move that prevent  me from doing anything. It feels like it's more than just tactics, openings and endgame studies that I need to work on to reach this level but I can't find the resources that I need to improve.

Should I just continue to do tactics and it'll improve overtime ? Or should I read books aimed at my level to put some meaning into that  whole "Positional chess" conundrum ? 
Feel free to review some of my last rated games, I can give insights as to why I played certain moves

Study! on chess.com go to "learn" and there you will find very good lessons to inprove at chess for example I learned how to win an endgame with a queen vs. a pawn  that is supported and about to promote in those lessons so I recommend going there it will defededly help

 Here is a direct link to lessons: Lessons

Start to improve your openings first! ChessMood openings are the best. Check them out https://chessmood.com/courses 

By now you should have learned some of the positional "conundrum". I didn't see you mentioning study middlegames anywhere, I think you should focus on that. If you and your oponents are not making any blunder and you are getting to endgame in every game, maybe you are not generating the conditions for a middlegame win (aka you are playing passively, just preventing your oponent threats). Maybe studying middlegames and how to attack will give you the push you need. A concept that helps me a lot is "don't exchange a piece unless it improves your position". With more pieces on the board there are more chances that your oponent (or you) will mess up eventually.

Study the endgame.  Put some serious time into endgame study and you will see improvement in all phases of your chess.

You're absolutely right ! I forgot about middlegame and now that you're mentioning I realise that I'm playing very passively and not generating conditions. I'll be looking into that ! Thank you !

I am going to say something controversial i believe. Chess truly is mostly a game of tactics from my experience. Hear me out... these days i think many people try to get the positional concepts right and most chess videos i see always talk about positional concepts but to evaluate a position correctly it's very important to actually visualize the position and the moves u will make to get there.

For example, i lost my recent rapid game, a game in which i was hugely ahead at the start as my position was much stronger.  I believe it was 1.8 in the first like 12-15 moves... the opponent had his king in the centre, i had my rooks on the center files so what should i do? positionally speaking i should open it up by playing my centre pawns forward, i did just that... turns out it was the wrong move since my opponent can defend against any attacks by playing a few strong moves(which he found unfortunately)... however my winning try was not to open the position up but to attack the b pawn(a pawn on the side, which could be defended easily), the idea was that i move my queen to the b file with tempo and then do a strong threat with my knight.... but i was so caught up with opening the center that i did not even see this tactical resource... as a result i equalized the game and lost it later due to a blunder.

This is not just one game, many games of mine saw me have a strong position but i could not find the strong move to take advantage of it.

Also not just in this case, it's very important to actually calculate variations and see the resulting position in your head to actually positionally analyze that final position right? being strong at tactics and seeing things clearly in your head also immensely helps with your positional strength since u can clearly analyze the final positions in your head.

Basically what i am saying is, first do the basics right, get very good at visualizing the moves in your head, seeing the final positions in your head... and once u feel comfortable at that only then go forward and see some positional videos. I highly, highly recommend chessnetwork youtube channel, especially his analysis of super GM games in that channel. He has increased my positional sense immensely, went from 1300 to 1550 without even playing any games and by just watching his videos. I completely quit playing for a long time and only really watched his videos as i enjoyed it, then I came back to chess and went up to 1570+ in a short time span.

I however don't have time for chess and can only play one game every 2 days(sometimes i can afford to play one game a day) and i think that holds me back as well. However the biggest thing as i said is that i do get strong positions in the middlegame (both my recent rapid games had me at a big advantage in the middle game) but fail to convert it successfully. If i had time to practice more tactics and play more it would be nice.  You seem to have more time to dedicate to chess so it should be a lot better for you

Tactics are the language of chess, but when the tactics are not there (yet) you have to create the conditions for them to appear (in your favor, if possible). Positional play is creating those conditions. This is so important: POSITIONAL PLAY WILL NOT MAKE YOU WIN IF YOU MISS THE TACTICS. Positional play are a set of ideas that may or may not work in a position. YOU ALWAYS HAVE TO CALCULATE FURTHER TO CHECK IF THAT POSITIONAL IDEA FITS THE POSITION. If it fits, then you've got a plan.

I recommend you to study How To Reassess Your Chess by Silman. It explain in a simple fashion the basics (and some advanced) ideas of positional play, which are the ideas that make you better than your opponent on middlegames, when there are no favourable or losing tactics in the position, how to make your knights better than your opponent's knights (bishops, rooks, etc). Always check the tactics first. Maintain you in form with tactics problems, everyday if possible. And don't trade, unless it gives you some advantage.

I disagree with this saying "if there is a tactic in the position", there are always tactics in any given position.... the reason we don't see super GM games decided with tactics is that they are well aware of every tactical idea and they make their moves accordingly.

Knowing and seeing possible tactics and what your opponent can or can't do in a position is also important to formulate a plan. To illustrate my point, i have this example

Very simple position with no tactics right? The most obvious and the best move is Bd6 protecting the pawn from the knight attack and then prepare to castle... however to play Bd6 you must know how to respond to Bg5 pinning the knight, if you move the bishop back to unpin then u drop the pawn... so is Bd6 really that good? YES it is, since u can actually play Be7 to unpin, if the opponent takes the pawn then u have the shot Nxe4... or the other way to really unpin is to drive the bishop away from with h and g pawn moves but then u would have to castle queen side... you have to understand this to play Bd6, be prepared to castle queen side if the opponent plays Bg5 and thus make the game very tactical or lose a tempo with Be7, which is playable due to a tactic.

Also, in the diagram position u must understand that u can actually play Bc5 because if Nxe5 then Qd4 winning the knight... but what if white castles? now the Qd4 threat is not there and white is simply attacking the pawn... do you have to play back to d6? if yes then Bc5 was a bad move... or u can pin the knight with Bg4 but u have to see that white can drive away your bishop with his pawns and take on e5... so Bg4 is actually a move which trades the bishop for the knight and then u will castle king side, making the game strategical.

So, in short, u know how to respond to certain replies in order to make your moves.  In that simple, non tactical position if a player can see what the replies to certain threats will be he can make moves he wants to get to the final position he likes, he can analyze those positions in his head using positional factors and decide what to do.

That's why tactics are important because u must know what replies from your opponent will make u respond in what way... there was no tactic in that position but there were tactical motifs(like pinned knight, hanging pawn on e5) which decided how you will reply and what the resulting positons would be

All the analysis you give about the tactics that could appear on that position and could or couldn't influentiate the game is a position evaluation, that's positional. There's no positional play without tactics analysis, and tactical play without position evaluation it's just chaos, any side could win. Positional play is prepare the position for tactics to appear in your favor. It's like the difference between tactics and strategy. I've heard Magnus Carlsen saying in his stream "Always think positional" refering to don't taking an immediate tactic that could lead you to win material but leaves you in a bad position. Both, positional and tactics, requires calculation, but calculation isn't tactics.

It isn't positional analysis at all... the point is that if u don't see that u have the Nxe4 shot then u won't play Bd6, the best move since u would think that after the bishop pins your knight u will have to go back and drop the pawn.... u seeing that tactic ahead of time allowed u to play Bd6 with no fear of getting into a pin which can't be gotten out of easily without dropping a pawn

Also, at your level u should not be listening to magnus carlsen at all. He sees all the tactics(except some very complicated tactics) easily and beforehand so he can afford the luxury of "seeing positionally" since he already knows what and what can't work.

I have a quote from hikaru too, "up until 2200 chess is 90-95% tactics", do you know why? because u won't have just seen everything so there are many positional plans which u won't even think of if you don't see counter play to opponent's moves.

indeed. For me, as someone who has been playing chess off n on for 30 years, I kind of blur through the many comments made here. Apologies. Not because it's not sound, but because I can relate and it's been replayed over n over again on various forums, threads etc. One commentor said (paraphrasing) " lower rated players tend to trade promiscuously (in other words: alot!)!" which, as a mentor myself, I have to disagree~to hang pieces yes, but to trade? Nah. i dunno his experience with beginners, casual players but I rarely see them just trading (to an endgame?) As it is, another commentor suggested studying openings... which I like, but it's more generalized by his context. Okay, cool. One suggested studying endgames which i like also. Cool. Like I said, I blurred over alot of replies, and if someone suggested middlegame tactics or studying mates & general tactics it's my bad, that's awesome too. Hopefully someone mentioned Positional Strategy which is the one thing every player should know because it's Fundamental. Principles of Force, Time, Space, King Safety, Pawn Structure does NOT change. It's not Trendy but neither is it reputable. Knowing that the Initiative is Dynamic, Pawn Structure is Static those are things that stay with a player-whatever trend is going on, who is World Champion, or even what opening you're playing. The number one thing I say to my mentorees: Playin's always the thing-wins or losses doesn't matter, it's just a game...you're not better than anyone else who also enjoys the game. The feeling you get by bringing your experience, knowledge and everything you learned (with me) to fruition culminating to a well played game by both sides is what you should validate you as a player. Just play. ✌🏽

I agree 100%.

[I have a quote from hikaru too, "up until 2200 chess is 90-95% tactics"`]

Hikaru says that because he sees positional mistakes subconciously, It's so over our level that he doesn't even need to think about it when playing against weaker players.

I'm not saying tactics aren't important, I'm just saying that positional understanding is fundamental too.

Sure it is important but really at this level it's not nearly as important as spotting tactics.  I have an example, a very good video where two super GMs are playing and both super GMs ' point of view and thinking technique is shown. 
NEW OPENING!! Magnus Carlsen vs Wesley So || Banter Series 2020 - R1 - YouTube

If u notice, magnus very early on figures out he can't play d4(which he wants to play), due to a tactic... wesley's thought process also revolves around that... in a lot of moves it's the typical "i take this, he takes that then he has Nf3 damn"  etc etc...     I think that video is a good example of how tactically intensive top level games really are, however if u just see the game afterwards then there are really no huge tactical shots so u might feel that the game was positional, their thought process however was almost entirely based on avoiding tactical "threats"