@h
Jitsi Meet
https://meet.jit.si/chattest123

For more details I did a post about it here:
https://qoto.org/@freeschool/108119548189428277

- about the only thing to go wrong is people not accepting the mic or camera permissions at start

- or rare cases some hardware thing (like if they have two similar windows open)

otherwise the link + nickname and that's it!

Works on older system and browsers too...