My right trigger button isn't working

Usually after a fall the plastic around the button gets bent into the button a little bit or sometimes the button part that is inside the console rubs on the plastic.

What I do is inspect it very carefully around where the button is and find where it is sticking. They I either try to bend it back or I remove a small amount of plastic with a hobby knife or razor blade until it moves freely again.

This fixes the vast majority of these types of problems.

I hope this helps.