I have been promoted to Team Lead recently and while I saw Jira as a burden while being a dev, I now totally rely on it to keep on overview. We're currently lo

I have been promoted to Team Lead recently and while I saw Jira as a burden while being a dev, I now totally rely on it to keep on overview. We're currently looking into outphasing Jira and going to GitLab, but as I see, you can't nest tickets there. Can you? This is absolutely crucial to me. I'm happy for recommendations that allow ticket nesting (Epic, Issue, Subissue) and interface nicely with GitLab. Thanks!