How would I be able to use a domain I got with my GitLab Repo?

[Målingen]

Hello Everyone, Malingen Here.

I wanted to ask on how you could use a GitLab Repo, which is where I'm currently storing my site, with a domain I got. I don't want to manually update the database everytime I make an update and want it to update every commit. I'm currently using Vercel as my hoster who also handles the domain to which it updates every time I commit on my repo, but I'm looking to get more control over my domain and get some perks like having a domain email and such.

Thanks.