Do you have a recent game that frustrated you? I'll be happy to take a look and maybe do a video review for my channel, if that would be helpful?
Starting to play again good positional player but!
You can improve your chess by solving tactics every day for a long period. There aren't any magic tricks to help you in a week. Read Yasser Seirawan's "Winning Chess Strategies". Use chess.com lessons.
Also by analyzing your game I've made a decision that you're rather a tactical player (but your calculation ability isn't that good), because from the perspective of strategy your moves like: b6, O-O-O, capturing pawns with your knight on the Queen's side - don't really make sense. You created a weakness by playing b6 and O-O-O - b6 is a weak point now - a2-a4, a4-a5, axb6 and the a-file is opened. So you shouldn't play b6 if you planned castling Queen's side. It was better to castle King's side and pay developing moves such as d6, Be6 etc... Then capturing pawns at the Queen's side is a mistake because it opens up important files such as c-file and a-file. Players usually sacrifice these pawns in order to open files, but you made a present for your opponent.

I'm no Anatoly Karpov, but didn't 20...Qe7 simply hand the queen for zero compensation? And White didn't notice it.
How can I improve my chess? I think I have the potential to be a good player mainly because of my positional and defending ability but I need more any ideas please?