I deployed it using the docker compose Config for my university group in our rancher cluster: https://github.com/jitsi-mee/docker-jitsi-meet

We now use it for most meetings, works very well so far, several sessions in parallel with several dozen people at the same time (but mostly only using audio).

Screen sharing works fine as well.

We made the experience that they are unfortunately right about requiring chrome (chromium works fine as well).

Would be great if firefox support could come back.