Looks like you should use an engine to help identify patterns.
Don't use the engine for every move, but you can use an engine to highlight specific positions that have either missed opportunities or ways to get a calculated stronger position.
Missed Opportunities
Na5 is a common way to attack the c4 bishop. Usually, the idea is to go back one near the edge of the board when one of your bishops is attacked. Bb3 here and Bg3 in the London System.
However, you also have a missed opportunity, Bxf7+.
Look up the Fried Liver Attack. You want go over the pattern, not the exact position to see if you should try it. In this case, there is good reason to play Bxf7+.
After that, the next pattern is opening your side files. Instead of Qxb3, play axb3. Same with the London System, hxg3 opens the other side.
Building a stronger position
This is more subjective I feel. One way to look at it is to not bring the queen to f3 on an open file. If you can see the calculation of 23. Qxh6 to threaten the queen pin, then great.
The idea I have instead is to take advantage of squares your opponent can't easily occupy. Ng6 also forks the rook and bishop. It's not as good as the queen pin, but it can give a smaller more guaranteed advantage. I find that easier to spot.
You can then employ other patterns like bringing a rook to a third file. In this case Bac1. Playing c6 further locks in black's bishop. White has very strong control over the board. Black's king is in peril. It can't castle kingside and the queenside has opened up. White's queen can now possibly take the b7 pawn.
I do lessons, drills, puzzles and am watching instructional youtube videos, so I know I'm improving if I continue. Though, what I'm looking for is some more direct advice on how to improve based off of my (rapid) games. So if someone would be so kind to look at some games of mine and can spot some recurring good or bad things, or some tips in general it will be greatly appreciated.
I know I will get the comment: ' Maybe what you need is a coach', but unfortunately I don't have the money for that investment.