Mercurial is nice if you are a max middle-level and do not use anything besides checkout/commit/push. Any non-trivial stuff requires manual reading (the same as for git)
I know you have no time to know your tool. But I don't see any hurdles to allocate one evening and read https://jwiegley.github.io/git-from-the-bottom-up/. It gives a model that you can apply to other distributed VCS and may be make you a better engineer.