I pay 30$ a month for a server (yes, a virtual one, if you want docker, you have to pay a bit more) with org-domain and tls cert. I would recommend that to every developer. Yes, some administrative work is required but that is also a valuable learning experience. You would own all the tools that you need to develop efficiently.

Personally I use Gitea, which should be usable by someone used to Github. I don't switch workspaces too often, but I am sure some tools are available.