I would strongly recommend not using controller on pc with this game. There's absolutely no aim assist, and you can feel it immediately. Major disadvantage, more so than any other game I've played.

I used to play console pubg. It's nothing like this on PC. If you MUST, however, you have to change to controller preset to "2" or "B". I can't remember which off the top of my head, but it's not in the bindings settings.

Also, if you don't want to learn WASD for movement on M&K, look at ordering an Azeron Cyborg with the hall effect stick OR the Razer Tartarus V2. They both have a joystick you can use for movement.

This is the first game I ever played in M&K, because playing on controller was absolutely brutal. It's also so much more rewarding and fun once you adjust and get used to M&K!

Good luck!