Could you share a bit more about your software situation? That changes the guides and things we recommend. Are you using RetroPie or similar, or just Pi OS.
There was a bug getting around a while back with those 8bitdo controllers with retropie, detailed here:
I’d also make sure you’re in x-input mode (holding x and start when turning on the controller)
Also, I’d try the controllers over USB to make sure they are functioning as expected.
There is also another thread you may want to have a read through:
