audio – Bluetooth speaker connects to input rather than output – seems related to macOS Big Sur

I’ve got a bluetooth speaker (Bose Mini II SoundLink) that I’m trying to connect to my Mac. I was playing music through Tidal and it was working normally but then it suddenly disconnected, and now whenever I try and reconnect it, it will show up in input devices (under System Preferences > Sound) and not under output devices (even though I’m pretty sure it doesn’t even have a Mic).

It seems after updating to macOS Big Sur my bluetooth devices are consistently having problems because some headphones of mine also refuse to connect with the audio unless I redo pairing them every time.

Can someone tell me how to fix this?