Even if theory isn't helping, you may start to intuitively recognise patterns and cut back on mistakes. There are some principles you should remember though.
Don't wave your rook around unless you really know what you're doing. In one game you captured a pawn with your rook - good move - but then you should have retreated. Instead you hung it, your opponent didn't notice, then you traded it for a knight.
Don't move a piece twice in the opening. That goes for pawns, too. It actually worked out for you in the game I looked at when you did that, but only because your opponent blundered their knight.
I should point out I'm under 500 and I still make horrendous mistakes.
Improving Your Chess - Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond