Do you perhaps have Resist Fingerprinting or Strict Enhanced Tracking Protection turned on?
I was never able to get videoconferencing sites working with any combination of those (on Linux), so I just use a vanilla Chrome instance just for videoconferencing.
Get a BeagleBoard! https://www.beagleboard.org/boards/beaglev-ahead
Edit: or a Star64! https://pine64.com/product-category/star64/