inaccuracy,mistake moves

Be careful, many moves stockfish/chess.com analysis call inaccuracies or mistakes are good moves and often THE best human moves.  The move may follow a standard technique like Opposition of the King that surely wins but takes more moves than the fastest mate Stockfish can calculate. But making the moves Stockfish recommends may involve complications that can lead a human to make mistakes, so the "mistake" is actually the best human move.  Or the move may swap Queens and leave you up R + B vs N, where you should easily win but Stockfish sees an easier mate with the Queens on the board.  Still, your "mistake" simplifies the game and makes calculations easier so it's still your best choice.

For real inaccuracies and mistakes - something I'm prone to do in short-time games - the best way to begin minimizing them, and it's helping me a lot, is to do the Tactics Trainer or similar things elsewhere and learn to recognize patterns.  It helps to know the patterns by name- that puts a hook in your brain on which to hang the pattern and more easily recall it.  Two sites with excellent interactive tactics examples are:

https://www.chess.com/article/view/chess-tactics--definitions-and-examples

https://chesstempo.com/tactical-motifs.html

Additionally, IM Danny Rensch's Patterns You Must Know video series on chess.com and similar ones elsewhere are very worthwhile.

thanks to all for your suggestion