The RadioMaster Boxer ($89) and Zorro ($79) are the two best beginner FPV controllers right now, and no -- you should not use a gamepad.
Both radios use ExpressLRS (ELRS) protocol built-in, which gives you reliable range up to several kilometers and ultra-low latency. The Boxer is full-size with an ergonomic grip and a built-in color screen -- it feels like a proper radio from day one. The Zorro has a compact, gamepad-inspired layout that many beginners find comfortable, and it's $10 cheaper. Both have Hall effect gimbals, which means no potentiometer drift ever.
The critical difference vs a gamepad: FPV radios have no center spring on the throttle stick. That free-floating throttle is how real pilots control altitude in acro mode, and your muscle memory must learn it from day one. If you practice 50 hours on a gamepad, all that muscle memory is wrong for a real FPV quad. You'll have to unlearn everything.
Get a real radio, pair it with Velocidrone or Liftoff on PC first, and your sim hours will transfer directly to real flying. My pick for most beginners: the Boxer. The ergonomic grip reduces hand fatigue during long sim sessions and teaches proper radio handling from the start.
Check RadioMaster Boxer on Amazon