Weird things happening with my controller

So since this morning i hate a lot of issues with my Playstation Dualsense 5 controller on rocket league. First all of all buttons are mixed up and when i press one it does what another is supposed to do (eg; L2 is for left air roll/brake and triangle is for ball cam, well when, i press L2 it switches camera mode. also when i press R2 it boosts when boost is R1) and when i press three buttons at a time it changes from windowed mode to fullscreen and vice versa, im very lost and i dont know what to do. please help.