1000th game has come and gone and I am still 700-900 range. Should I use a chess coach?

Well, for starters, you should play a LOT fewer games and do a lot more puzzles, drills, and lessons. Also, it wouldn't hurt to analyze your games after you play them. I just looked at the one page from May 4 (today), and I see you've played more games in one day than I play in a week, and you haven't analyzed any of them. 
Too, though I don't know what your financial situation is, I'd recommend getting a Platinum membership for $49 and do unlimited puzzles, 5 lessons per week, and as much analysis as you want. 
Also, I'd recommend playing over a lot of master games and see how the "big boys" do it. Start with the games of Paul Morphy and move  to Capablanca and Tal--all tactical geniuses. Here on chess.com, under More>Master Games, you can also select games by the number of moves. Try playing over some shorter games first, as those are almost always decided by some tactical blunder, and see if you can figure out what went wrong.
Finally, play some of the bots under Play>Computer. You can take as much time as you want, modify the level of play so you get hints and takebacks, and the games don't affect your rating. Play each bot as many times as it takes to beat them confidently, and then move up. So far I've beaten all the beginner and intermediate bots with no help, and I'm starting to work on the advanced group.
You CAN get better, but just playing game after game after game after game isn't going to do it for you.

Chances are chess opening principles will help you:

https://www.chess.com/blog/KeSetoKaiba/opening-principles-again 

If somehow this isn't it, then probably a little study into some basic checkmates and theoretical endgames will be useful. Otherwise, it is just about not hanging pieces.

Get decent at these things and you'll be 1000+ chess.com rating for sure. We could even play unrated chess sometime if you want me to offer more tailored advice, but usually opening principles by itself is enough (many think they use them, but they really aren't enough).

Well, NameofNames, I see you DO have a Platinum membership. And you HAVE analyzed a great number of your games, and you HAVE done over 1,200 puzzles. So what part don't you agree with? You've played over 4,000 games since July, and you're still under 1200. I will bet you could have made much faster progress had you done some drills, lessons, and study of master games. BTW, don't take my own rating as evidence that I don't practice what I preach; I do. It's just that I am nearing 70, and have always been a relatively weak player. Stinks, I know.

playing consistently doesnt mean anything if you're playing scrubs. looking at your games, opening principles isn't the problem, you have no trouble developing pieces. But you get extreme tunnel vision. in the opening you're trying to play the Italian, Bishop c4, nf3, against everything. It doesnt work like that. you get your knight down there attacking a rook and don't realize the other guy has mate in one with a queen-bishop battery. you have to look at what the other player is trying to accomplish, not just focusing on your own plans, in order to improve as a player. and study!! openings, endgames, tactics, basic checkmating patterns, pawn play etc. 

I annotated one of your games to give you advice

Dear TalkingBeing,

I am a certified, full-time chess coach and International Master, so I have seen it and tried it all.
There are so many ways to get better and I know it can be overwhelming.
You can learn from free videos on youtube, there are books at your disposal that can all help, but they are not tailored to your needs.

One of the most important things you can do is to analyze your games! You must learn from your mistakes! That is a priority. You can't really move on to a new, different topic and learn new ideas if you still make the same mistakes over and over again!

This is where a chess coach comes into the picture. A good coach can show you how to study, what to study, gives you the material YOU need. Naturally, it takes time to use everything in practice, but if you are relentless and persistent you will succeed!
You should learn the main principles in every area of the game (opening, middlegame, endgame).  Don't focus on only one part! You should improve your tactical vision as well as it is part of all areas!  
This how I built my training program for my students. We discuss more than one topic during a lesson so it's always interesting and they can improve constantly. I give homework too and the right tools to make practicing enjoyable and effective!
Don't worry about your rating and the ups and downs! Just keep on playing and practicing!

I hope this helps.  I wish you good games and 100+ extra ratings

When I look at your last two games, it's clear to see that the problem is tactics. If you are serious about improving, that's where you need to focus. What can you do to improve tactics?

1. Study tactics. This site is good for it, but you might have to get a different kind of membership to take full advantage of it. There are also books. Studying tactics is not just doing puzzles though, you should also learn what tactics there are. 

2. You should learn how to spot tactics. Knowing your tactics doesn't mean that you'll always spot them. You also need tools to be on the lookout for opportunities. In chess, tactics happen when there are undefended or insufficiently defended pieces, moves that put your opponent in check or moves that threaten, for example checkmate threats or attacking pieces with a higher value. Looking at all possible moves that can do this, will help you spot tactics. Also, don't forget to think about what your opponent can do! Always ask yourself what your opponent is attacking with his/her last move. 

3. Analyse your tactical mistakes every game. If you lose a piece, see what happened. What could you have done to prevent it? Could you have saved it? Was it an unguarded piece? Was that necessary or could you have guarded it before that point? First look at the game yourself and if you can't find an answer, use a chess computer. Again, chess.com has an build-in engine, but I think you might need higher membership to use it? Not sure. Don't worry about tactical sequences where it's more than 2 moves deep from either side. That'll come later in your chess education. 

A lot of this work can be done on your own. It's always useful however to have a stronger player be your coach. It will speed up your proces and a good coach can give you help to make your thought process better. Even if you get a chess coach, however, you need to know that getting better at tactics is an arduous process. It's not a switch you flip. You need to put the hours in to get better, just like a basketball player has to practice throwing the ball. You need to think for yourself what you'd like from chess. You can study chess for your whole life and there will still be stuff you don't know. But you should also be able to enjoy chess knowing you don't know everything. Making mistakes can feel frustrating, but you'll always make mistakes. So don't let the fact that you're making mistakes make you dislike chess!

Try a longer timed game, so you don't make mistakes in a rush?

Play often daily against Computers and Humans online and offline. Analyze your Chess Games and Chess Games from other players with the Computer. Study Chess Books, Strategy and Tactics, Openings, Middleplay, Endings. If you want, go to a Chess Club. And never give up. Exercise makes the Master. Have fun and good luck!

That means you're doing pretty well. no need rn.

1000 games are meaningless if you dont look at your games afterwards and figure out what you did right and what you did wrong. if you can't do that on your own then yes a coach might be helpful to teach you how to review games. also, agree with the advice re slower time controls.

That's normal. I reached 1000 rating after 1700 games. Then I reached 1200 after 2300 games.

I never did any of that and I am over 1600 blitz on this website. Occasionally I would look what computer has to say after the game, but most of the time I didn't even check.

2 things wrong:

1. All you're playing is speed chess.  How are you expecting to improve when you're moving fast?

2. You're not using your time wisely.  Play G15, and finishing with 8+ minutes on the clock.  Again...how are you expecting to improve when you're moving fast?

See the common theme?

Good thread Talking Being.  It's giving me some encouragement and ideas for improvement.  Thanks to all that took the time to respond.