Gitea is what I use. I see a lot of recommendations for gitlab, but I have some experience with it as well as github and for the life of me I can't understand the gitlab people.
Do they not see the persistent and ridiculous bugs? Merge requests are ajax based and their initial load stage frequently shows errors like 'branch "master" does not exist' and then 1s later ajax loads and shows the MR. But then when you go to view the diff, half the diffs don't load and when you click on them they still don't load until you decide to click on somewhere else, then the page loads and highjacks your scroll to take you to god knows where.
Gitlab is a mess. If you just use it for yourself I guess it's fine, but if you're installing it for the web-frontend, literally any other git front-end is better.
FYI, my setting is marked inactive, I do remember the in-your-face popup on my tv and I disabled all of the sharing. Still got an email this morning.