You win

Nice game with good annotations.

Yes, but the question in the title is: Could I have done better?  I only won because his mistakes were bigger than my mistakes.  And note where I say that I'm planless.  Those are positions that I don't really understand, so I need help breaking it down and coming up with something positive to do instead of shuffling around.

I think black contradict with his plan deciding not playing b5 at 22. Then the knight can play b6 to press the c4 pawn

I think you should play a4 at move 24 or earlier to avoid b5

31 I dont like a4 because black can play rb8 and rb4, second if you exchange rooks then the a4 pawn will be varneable

35 ...Kc7 is ?? after Rxa4 and Rxh4 the game is over. After the actual move white is better

39 Ra2 I think is a mistake the rook at b2 ptotects King from check