u/FreeCrayons

I am finding a lot of android games controls are incredibly badly done (for example, one game I want to play, to attack to the left you hit the x button and to the right, L1. This same game on the PC its the A and Y respectively) Is there a setting I am not finding or a decent app that would allow me to adjust these? Preferably on a game by game basis, but I could work with having to readjust if I have to.