like kawa said look for a local “retro” game store or any like salvation army type thing. places that sell collectible games and old stuff usually sell refurbished/salvaged controllers for all systems. If anyone in the thread is really pressed on finding an affordable gc controller you know will work, I could link u to this store website and you could have them ship you one (I imagine) or worse case you send me money for the controller and shipping and I could do that ! but if Ur not keen on getting yours in person I’m sure E-bay is fine or whatever
speaking of which I need a new adapter