I say again: Jitsi Meet (Open source, self-hosted) has voice/video E2EE (it has text, but is not yet encrypted).

No login. No password. No app. All WebRTC. Chrome required since Firefox does not yet seem to support encryption over WebRTC (I think).

I set it up from scratch with Debian Linux and Virtualbox in about 30 minutes here: https://www.youtube.com/watch?v=4rlffwHUchk