Adding onto what’s already on the thread, you can try look at the newer Element Call, which is an implementation of Matrix’s native calls.
I’ve been using it a bit recently, since Jitsi seems to have stopped working reliably for me (to be frank, I’ve not put much effort into debugging it yet). It works well, but it’s still early stage, lacking some features Jitsi has. If that one works for you, I recommend you stick to it.