I'm going to plug https://onedev.io/ its awesome. Its self hosted and has its own tooling for CI/CD. I feel it doesn't get enough love, but I've been using it for years for my own stuff.
Oh this looks really neat. I've been slowly hand rolling a home server. Started with Gogs felt that was too heavy, now I'm at cgit + gitolite which is awesome but I'm not sure what I want to do when it comes to CI/CD. This is probably on the scale of Gogs but something about it feels more reasonable lol.
There is a bit of a learning curve, but there is for any new platform. The devs are very responsive and looks like they're doing an enterprise version for funding. It uses Agents which run the tasks in the CI/CD jobs.