@GoreScarecrow Maybe also see this re USB headset/mic woes: https://askubuntu.com/questions/1093343/usb-c-headphones-not-working-despite-being-listed-as-audio-device?noredirect=1&lq=1
It is a bit worrying that I see problems with headset/mic also being reported for Ubuntu 20.04, so also Zorin 16 in future? https://askubuntu.com/questions/1230016/headset-microphone-not-working-on-ubuntu-20-04