MY GOD, all those 502, 422 and 429 errors made this machine 10 times harder than it should.
Because I was getting a strange 422 error when I attempted to register a user, I went down a rabbit hole and with no cool drugs to make the trip worthwhile, only my ever-increasing rage and frustration to help me power through.
I tried to brute force a user and that, of course, got me banned 
After that I went on a graphql site seen trip, only to find out that I just needed to register regularly half a day later …
I thought that I was going to lose my mind with this machine, but then I found a french-omelette-cheese-recipe in the â– â– â– â– Gitlab and I knew that it had already happened.
Cherry on top, another user put the same root payload in the same place that mine at the right time to mind f*ck me one last time.
Ahhh this is going to leave a mental scar; I’ll probably get an eye twitch every time I see a Gitlab from now on.
Any way, jokes aside, I got root. PM if you need help. The tips here helped me a lot.