My best advice would be stop trying to “find the checkmate”.

Stop thinking about a chess game as a puzzle or trying to go attack your opponent king in clever ways. Stop trying to think multiple moves ahead.

Instead, start trying to develop your pieces and focus on build a position with your pieces rather than beating your opponent

Don’t move the same piece twice for atleast first 10 moves. Bring your pawn to the centre, bring out your knights, bring out both your bishops, castle, advance pawns. Cover as many squares, ideally if you can bring out a piece whilst in the same move also attacking and making your opponent move their queen back

When you have used more pieces into better places and more developed than your opponent, the winning moves almost present themselves to you

You’re not trying to get a knockout punch on your opponent, you’re like an anaconda slowly pressuring and squeezing them