I would go with Gitea or Forgejo (not sure how this is going to last) if you need a complete experience like a WebUI, issues, PR, roles and whatnot.
If you’re looking for just a git server then gitolite is very good and solid option. The cool thing about this one is that you create your repositories and add users using a repository inside the thing itself :).
Then you can use any Windows GUI you would like like Fork, SourceTree, your IDE etc…