Matrix is really good i have a homeserver setup with a livekit instance using sable client and its really good. VC works really well theres a soundboard that you can customize if your willing to mess around with the element call src code (hopefully that changes at some point to be easier) screensharing does work but desktop audio doesnt tab audio does seem to work but only from chromium based browsers (i.e brave) (this can be workd arround by routing audio through your mic but is a bit of a pain hopefully it gets implimented soon. (Also sable doesnt yet have a desktop or mobile site but the web app works well in mobile browsers)