I having been successfully using the Anker PowerConf 300 webcam. Using the AnkerWork software on my M1 mac, I find it has excellent autofocus, auto exposure, and zoom and pan capabilities. The cost is $130, but it is often on sale at $100.

I have used it with iGlasses, but that has tended to crash after about an hour. So I use AnkerWork though it is less convenient.