So, I got a basic Gitea Instance here: https://git.cowdev.online, but I would like to rename my site. NOTE: It's actually a Nginx server which uses a Gitea Server on port 3000 as a reverse proxy. If the website goes down, It's most likely I'm just playing with it or my Server trial or Domain ended. UPDATE: I upgraded to GitLab, So you can't use the link anymore.
Found the solution, there's a property in gitea's config file (for me located in /var/snap/gitea/gitea-common/gitea.ini)