Huh. I’m unemployed & job hunting right now, and have had a few interviews via Teams. I’m running Mint and using the Teams web app in Firefox, and for some reason, the sound has never worked properly, so we’ve ended up switching to phone each time. The sound works fine in Zoom. My next interview expects to conduct it via Teams video, so I found a friend with Teams to help me troubleshoot later today. I was thinking maybe it was a Firefox problem, but it works fine in Firefox for you?