yeah that URL is terrible, I use ionos in germany for a lot of domain name reg, maybe they will suit your needs too.
I'm self hosting a mastodon instance (my 1st ruby on rails and wholy fucking shit is that bloated compared to django) and it took a while for my instance to get into the federation, now I see all kinds of fun stuff and have total control
I've run into some issues with federation posts filling the /media directory but it seems to have been sorted out now.
if you have questions DM me and I might be able to help, I'm writing code for the next 4 hours and really want to do ANYTHING else...