How to improve in chess

I am stuck in 600 elo ,any suggestions on how to improve in chess?

Do puzzles analyze your games And be discipline during your games

Learn and apply the most important principles of chess. - (core of my teaching)
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.

I'm about to log out pretty soon, but another day if you see me online, feel free to message and maybe we can setup an unrated game or two where we play and I give you some of my tailored feedback for learning purposes

If you are below 600, then a good place to start would be learning basic checkmates and basic endgames and just rely on chess opening principles for the opening. Here is a popular chess.com blog post of mine on chess opening principles and also one of my YouTube videos on the foundational endgame of converting with a single pawn.

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

hi. i don't how teach

I recommenced analyzing games and looking at your moves. Also I recommend doing puzzles until you are about a 800-900 in puzzles and once you do that play some blitz to learn not to gain rating. While playing blitz you will analyze positions faster. Ps: I am a 390 ELO btw