Agreed, but use sway instead of i3 for Wayland support.

Pretty sure codeberg.org uses forgejo under the hood.

Another very solid option for self hosting is just adding a git user to a server with git installed, initiate bare repositories there, then talk to them with git@example.com:repo-name

There are hidden settings that you can change. Try googling in combination with “dconf” or “dconf editor”.