Can't improve over 350 ELO.




I don't have any advice specific to you. All I can do is tell you what worked for me that got me to my four digits. I did puzzles every day, I played 1. f3 2. kf2 and the reverse as black, and I played a lot of 5 and 10 minute games with an active focus of trying to play a just even a bit better than the game before.

Well if you are a beginner don't focus on ratings just enjoy and learn do tactics lessons and study master games don't worry about ratings when you reach 1000+ then start working seriously about rating just enjoy until then

Sandbagging is what is going on. A lot of sandbaggers who are actually 1500+ will play at that level to easily win tournaments. It is trivially easy to do and chess.com will not do anything to stop it, so it is rampant at low elo.
@1
"My blunders are much worse."
++ Always check your intended move is no blunder before you play it.
Think about your move. Do not play it. Check it is no blunder. Only then play it.
It happens.
I started at 400, got to 100, back up to 400, down to 200, back to 500, now back around 450.
Losses are frustrating. I just keep playing, keep learning
Continue to double check to make sure you are not leaving hanging or undefended pieces.
Read about opening principles, value of each piece, some tactics etc

It is not just about blunders. Take a look at this game:
https://www.chess.com/analysis/game/live/57556644311?tab=analysis
Please explain why you resigned in a winning position,

I looked at your last 5 losses. In all of them you had more than half of your time left. That indicates that you should be spending about twice as long on each move. That should significantly reduce the chance that the move you're planning to make is a blunder and you should win more matches.
Just one simple question: "Can my opponent take any of my pieces if I make this move?"
Ask this question before you make every single move, you will see your rating improve dramatically.

Just one simple question: "Can my opponent take any of my pieces if I make this move?"
Ask this question before you make every single move, you will see your rating improve dramatically.
I do this check all the time. I overlook something still or my opponent does some kind of crazy fork I did not notice. I can only keep playing at this point and practice.

It is very hard, I'm finding as a beginner, to improve.
The difficulty is often either perceiving something - I look but miss it (a blunder, or a missed win, or something), or I just get pushed into really bad positions and structures where I can't see any good moves and then it's like a slow strangulation as they crush me.
But at this moment it's all just practice, learning and development.

This might help
https://www.youtube.com/watch?v=bK6rAfukA44
Note: it is not a rickroll
And this too https://www.youtube.com/watch?v=dQw4w9WgXcQ
Note: it Is a rickroll

It is very hard, I'm finding as a beginner, to improve.
The difficulty is often either perceiving something - I look but miss it (a blunder, or a missed win, or something), or I just get pushed into really bad positions and structures where I can't see any good moves and then it's like a slow strangulation as they crush me.
But at this moment it's all just practice, learning and development.
This is what pretty much happens to me.