How should I get better?

just keep playing and try to remember common motifs across openings and practice puzzles. Watch games too. Just be patient. And dont obsess over your rating whatever rating you have be happy with it if you feel like youve hit a wall and not sure how to improve, getting mad will only make you worse.

Play longer time controls too if you arent already, starting out you need more time to think. When you improve you can change time controls to switch it up for fun.

Jus keep playing

Improving Your Chess - Resources for Beginners and Beyond.....

https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond

Good Chess Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-books-for-beginners-and-beyond

Focus on trying to figure out what mistakes you are making are you blundering am attack despite a free piece ? Or you missing those backwards bishope moves ,are you just hanging pieces 3 moves in the opening and work on trying to improve those while trying to gain knowledge in chess (example ) how to attack,positional play ,endgames ,etc

I wouldn't always use stockfish for that instead try to figure it why and how you are blundering in your own games instead of relying on a computer to tell you everything (it can be helpful tho but at least analyze your game first and try to figure out what mistake you think you made then look at stockfish )

The time pressure can be tuff for beginners though they should play the time control they learn best in (typically rapid for most people ) occasionally but rarely it can be blitz chess though so he should try it out of course once you have the intuition and can actually think in blitz then yes you can improve it is very difficult for some people to improve when you have almost no pattern recognition in shorter time controls

@1

"where to start to get better" ++ Analyse your lost games. Blunder check before you move.

"don‘t have premium chess.com" ++ Not necessary

I'll try it out, thanks

Learn and apply the most important principles of chess.
Always blunder-check your moves.
Solve tactics in the right way.
Analyze your games.
Study games of strong players.
Learn how to be more psychologically resilient.
Work on your time management skills.
Get a coach if you can.

You should add analyze your games the right way sometimes just looking at stockfish isn't good enough even if it is very helpful in some cases

I have been playing for 50 years, my rating on chess.com swings between 1150 and 1450, I lose more than I win, and often I find the game discouraging and depressing. Still, I play nearly every day.

I regularly review my games, do puzzles daily — and this does not help my play become stronger. Studying games of strong players leaves me confused.

A lot have that issue I never even begun to understand half of hikarus moves till recently try figuring out what your doing wrong and try to fix it it might now help but it is worth a shot

Are you analyzing your games correctly or just doing the normal thing of looking at stockfish and just listening to it instead ?

Cake would help :fork

Exactly stockfish doesn't do that that's why you can't just listen to it every game try to figure out what plans worked better like maybe should you be more solid ,more patent ,ect or did you just hang a piece in one move or miss a two move tactic,did you panic because your opponent played terribly ,etc

Though that's part of it cause you don't want to give a reason for every bad move lol