So basically I quitted chess for 3 motnhs then came back now I literally suck at it I was 700 elo now Im 500-600. I have a brilliant move every 1-3 games but I just cant win because I keep blundering. can anyone give me advice? you can check my last 10 games from here https://www.chess.com/member/clov7r (or more I think I have 2 brilliant games and lost games this week)
https://www.chess.com/live/game/166678704498 Lost a piece in the middle game, somehow got a winning position in the endgame but failed to convert, so I drew it.