imhigh-power

I have an issue using my playstation 2 controller on PC. The controller works completely fine, and so does the adapter. In fact, when I go to control panel > devices, it clearly shows the controller is connected, and shows every button I press. Everything works great, but when I try to play a game, like Overwatch or cuphead (that dont require adding any additional files) or any game at all, the controller doesnt work in game. In cuphead, it shows a controller is connected, and adds player 2 to the map, but the game does not reapond to any button pressed on the controller. What can cause EVERY single game I've tried to not recognize my moves while the control panel does?
Thanks for helping
PS, This may not be the best category to post this in, but i coulnt find anything more suitable than this. Sorry if I missed anything.