Well, my code is probably hard to read, and just reverts the x-axis to it's old position.
If you want to find a better system, I think this game of mine: https://void-gamesplay.itch.io/the-return-of-timmy-the-grappling-hook has a pretty solid collision system.
Anyway, thanks for the help! Its made me think a bit about collisions without barging head first into the code.