Yep, I had an APFS volume that I couldn't even health check. I was pretty sure it was filesystem corruption as it'd hang and shut off randomly then come back up without issues, same as when the SSD died the first time. Also am r APFS time machine volume would never finish encrypting, even after being plugged in for days.
That could be hardware failure. I've had one SSD fail, back around 2013, and the often just lock up without warning. They'll work for 30 min ~ 1 hour and just stop and freeze.
