Play and analyse your lost games to learn from your mistakes.
Tactics…
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56 Tactics That All Chess Players Should Know...
https://chessfox.com/chess-tactics-list/
more instructive resources...
Improving Your Chess - Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond
Ive learned the basic tactics, pins, back rank, smothered mates, forks, skewers, and discoveries.
I like to think I have a pretty high conversion rate in these positions, finding knight forks 79.7% of the time (I can provide a few nice examples if anyone is curious or wants to learn)
But I want to know what to do next, how do I spot more of these tactics in games, and what should I try to learn next?