Jitsi is pretty good. If you know a better FOSS tool for videoconferencing, I'd be happy to check it out.

Shameless plug: https://github.com/havfo/multiparty-meeting

If you find a better one that is not absolutely arcane and frustrating to use, let me know.

Until then, Jitsi is "good enough", even if it's still pretty rough in certain parts.

I love Jitsy for Video, but for schooling i prefer BigBlueButton it's also FOSS, but yes it's really not the same 'product-category':

https://bigbluebutton.org/

Why is that suspicious?