u/Casketbaby

I'm trying to use a bluetooth Xbox controller with the Retroid Pocket 5 for use playing on the TV.

The controller connects and I can use it to control the device, but when I load up an emulator, the controller doesn't register in-game. Is there a setting I've overlooked? I've dug all through the settings and tried different things, but no luck so far. I really want to use this thing as a console for playing old games with my son. Any advice?