Guys help me improve!!
Heard London system is fairly decent for d4 players. When I face it, I have to work hard to demolish its structure, else it just provides too solid board presence. So prob 2. Bf4 or 2. Nf3 (any) 3. Bf4
@1
"queen opening" ++ Good
"latvian gambit" ++ Dubious
"scandinavian defence" ++ Good
"they all result in average games that i probably lose"
++ You do not win or lose because of the opening, but because of tactical mistakes.
"so i can increase my ELO?" ++ Analyse your lost games and learn from your mistakes.

"so i can increase my ELO?" ++ Analyse your lost games and learn from your mistakes.
BS. Don't listen to this guy.
Don't Listen to THIS guy

At the level you're at, I don't think the Scandinavian is a bad opening (I used to play it, and I've been considering reinstating it). The Latvian Gambit is objectively unsound, but in the triple-figure ELO range even then that's probably not why you're losing.
To the extent that your ELO has anything to do with your openings, it's probably because you haven't taken the time to understand the theory beyond memorising maybe the first 5 moves. No matter what your overall strength, it is always possible to have good openings prepared, but that brings us to the other issue: you'll lose games in the middlegame and endgame.
I looked at 5 of your losses. In most of them the reason you lost was not the opening.
you hung your queen in two games when you were ahead in material. In both of these games, you only took a few seconds to move.
that is the problem. If you were my student, I would have you stop playing blitz and even rapid chess.
instead of playing other beginners in speed games, look at a book on how masters think about their moves. You will learn more and more quickly from that than you will by continuing to play almost random errors.
what opening should you play? It doesn’t matter. The best opening in the world won’t help you if you continue to make beginner mistakes.

i looked at your last 4 games and you won all of them, so congrats on that! i noticed that you did not just straight up hang any pieces in any of them. however, i would like to call attention to these two positions that occurred. in the top position you played queen to f3 to protect your bishop, despite the fact that your queen was guarding the b2 pawn from your opponents bishop. in fact you could have continued to guard b2 and not lose your bishop for nothing. the tactic that saves the day here is knight to d2 which opens an attack on their bishop and protects your bishop from their queen, prompting them to take your knight on d2 with with their bishop. now after you take the bishop on d2 with your king, if their queen had then taken your seemingly unprotected bishop you could have brought your rook to e1 pinning ithe opposing queen to their king and winning it! this whole sequence really isn't so easy to find but if you practice puzzles and study tactics you will be able to notice things like this. in the game after queen to f3 your opponent could have won your bishop with the move pawn to f5.
in the bottom position you captured a pawn with your bishop however this allowed a fork tactic as happened in the game.
all this said definitely study tactics.
my second recommendation is to study basic endgame techniques, especially king and pawn and certainly the basic checkmates if you don't know them yet.
At the level you're at, I don't think the Scandinavian is a bad opening (I used to play it, and I've been considering reinstating it). The Latvian Gambit is objectively unsound, but in the triple-figure ELO range even then that's probably not why you're losing.
To the extent that your ELO has anything to do with your openings, it's probably because you haven't taken the time to understand the theory beyond memorising maybe the first 5 moves. No matter what your overall strength, it is always possible to have good openings prepared, but that brings us to the other issue: you'll lose games in the middlegame and endgame.
It's great against 2200+ in blitz chess the scandi is pretty dynamic so it's hard to deal with for black and white
Endgames and tactics. I need to follow my own advice.
Tactics also doesn't mean puzzles ! If your just grinding puzzles endlessly you'll learn a few tricks but not enough you need to focus on strategy and positional play to (talking to op)

I'm not sure how to explain what I mean when I say tactics. I'm talking about staying materially even while maintaining the position while each player dances in the middle game. I'm talking about finding the one thread to pull on where your opponent's position unravels. Where all the pieces look protected but they are really not. I'm certain that every one is just as confused as I am and I will be quiet now.
I'm not sure how to explain what I mean when I say tactics. I'm talking about staying materially even while maintaining the position while each player dances in the middle game. I'm talking about finding the one thread to pull on where your opponent's position unravels. Where all the pieces look protected but they are really not. I'm certain that every one is just as confused as I am and I will be quiet now.
Basicaly there's a difference between solved tactics (puzzles) and getting tactics in game I was commenting mostly because slot of people get too stuck on the puzzles thing I assumed you weren't actually talking about chess.com puzzles

No I wasn't talking about puzzles. I was talking about honing your skills to be able to identify tactics in a game as they come up. No one is going to stop your clock and tell you " psst, psst there's a tactic here. " you have to be able to see them for yourself. You can have a million opportunities for tactics but if you don't see them, they might as well not exist cause you won't take advantage of them.
Ok so guys i play most of my games with queen opening and with the latvian gambit or scandinavian defence but they all result in average games that i probably lose. so guys can you suggest me openings and defences to use so i can increase my ELO?