switch controllers do not work on call of duty games so you have to use a software called "X360CE" link: https://www.x360ce.com/ it basically makes your controller show up as a xbox 360 controller all u have to do is click add, click your nintendo controller, press the buttons it tells u to press and , minimize the tab then go in game enable controller and u should be able to use the controller just fine.
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Michael188977
@Michael188977