I think this might be a kernel issue. What kernel are you running?
I just had the same thing happen with Manjaro. I was traveling. Used my laptop heavily in Grenada last week and on the flight home. Turned on this morning and the system saw the wifi, but wouldn’t connect to any networks. When I turned off bluetooth, wifi entirely disappeared and wouldn’t come back. Rebooted, but the same thing. Interestingly, this happened to me when I returned from Belize a few weeks ago.
I turned on my laptop this evening and everything just worked. Stumped, but too jetlagged to debug it for a few days.
I’m on kernel 5.15.32-1, btw.