For what it's worth, if you want a self hosted replacement for Zoom Galene has worked great for me, The server requirements are remarkably low, especially if you are like me and just need a personal video chat to a few people. I run it on an old apu-2 with openbsd(which is just about the worst combination and it still works great) As a bonus there is no client, that is, the client is just a web page so very low friction to get people to use it.

https://galene.org/