I use GitLab because it's at least better than GitHub and lets you garbage collect your repos.

https://sourcehut.org/

If you don't need the cicd stuff, Forjejo instances are really easy to spin up or use the ones online like codeberg.

Whatever the solution behind is, if you have the resources, move to something self-hosted. Open core or not, if that topic matters to you, you might need something you can own and control. BTW, have a look on Forgejo, Codeberg and Gitea: these are the solutions I see when people look for something FLOSS, not open core, and maybe self-hostable.

There's Gitea, which you can also self-host

I host forgejo for myself.

For self hosting?

sr.ht is pretty good if you don't care about a web GUI

I like Fossil-SCM, so https://chiselapp.com is good for that. But if you want to stick to Git, Forgejo is the best open-source offering (and Codeberg is the most prominent instance). If you want to tread far off of the beaten path, https://hub.darcs.net might meet your needs.

We'll all benefit once the forgefed project is done, and Forgejo/Gitea/Gitlab can all interact with each other.

To be honest, I'm waiting until we finally get federated git hosting, specially if done with ActivityPub. I think it fits too well the use case.

I believe forgejo is getting there, but it's still not possible.

Any software potentially has security issues. The matter is how they deal with it.