CS0120 error means that you need an instance for a non-static member.

You created this instance on the line: controls = new Controls()

now use this instance like this:

    private void OnEnable()
    {
        controls.Enable(); // changed to lower-case controls
    }

    private static void OnDisable()
    {
        controls.Disable(); // changed to lower-case controls
    }

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-messages/cs0120