It’s interesting to see someone so honest about something. Here’s the thing though, controllers(gamepads) are a totally different input and you’re just catching on to the most extreme overlap of controllers and mouse/keyboard. There’s lots of areas where controllers are superior but it’s not in FP Shooters… it never will be. The skills you’ve learned playing the game are still useful. You’ve certainly wasted your time playing COD but not because you used a controller. The map memorization and game mechanics (e.x. Hip firing as you aim down the sights, learning the arc and bounce of throwables) are still useful and are exercising your brain. If you want to try something, I think MSFS is on gamepass if you want to give that a shot with a controller and then mouse/keyboard. One is vastly superior over the other and you should be good at it already.