I dislike the UI a lot. I find it very confusing.

Github is so much easier to use. I don't understand why gitlab wants to make everything so complicated.

Honestly for me Github is really confusing. In Gitlab if I want to see a list of commits, I click on commits, for branches I click on branches, issues on issues, etc. . On Github there are Issues as a toplevel thing, but for commits I need to click a weird history button on the project homepage. Traversing and querying commits is so complicated that I often just give up and clone the project instead.