Finally!
Personally, I found that getting user was, frankly, quite easy (even in comparison with some easy and medium boxes). Sometimes, we just need to go the wrong way to find the right path.
It took me a while to pivot, but it was me going down a rabbit role. Once you enumerate it, it’s rather clear.
How to get to root was clear, but I confess I still struggled to escape what limited me. It seems I need more practice on that. 