Answer to "Why is my PS4 controller acting on its own?"The same problem happens to me. My PS4 slim controller L analogue stick doesnt seem to work well. Everything works, but when I toggle the L analogue stick down, the function works as if I toggled my L analogue stick upwards. For example, while playing Fifa 19, I would want to pass a player who is behind me (I would need to toggle L analogue stick down), but I, instead, pass to the player who is front of me instead (as if I toggled my L analogue stick). Can someone please tell me a way to fix this. I dont want to open the controller, buy a new part of a controller or buy a new controller.