This seems to be a common issue, but Celeste isn't detecting my controller - it works fine for other games, but for this one, when I go into controller settings, it just says to plug one in.  It isn't responding to any buttons either.  I've looked through all the other controller help threads, tried adding it as a non-steam game, Steam Big Picture (that won't detect controller either), etc. but none of it works.  My computer is an M1 Mac mini (Monterey) and my controller is a SteelSeries Nimbus+ (wireless/Bluetooth).  With both Steam and Celeste not detecting it, it might just be something with the controller, but I'm not sure.  Any ideas to fix it?  I have been doing decently so far with just the keyboard, but it would be nice to be able to play with controller.