PS4 controller r1 button permanently having an input placed into it

From what I can tell there’s nothing wrong with the button itself. I’ve tried taking it apart and cleaning the insides and whatnot and that only solved another issue of my triangle button not working but for some reason my r1 button not only works for specifically GTA 5 but whenever the controller connects in another game like cod, as soon as it connects it will throw or grenade or do whatever action is caused by the input of r1 but then not work again. I’m assuming the little plastic thing that detects inputs has a problem with it but I’m not sure how to repair it. Help plz?