Ditch the stale starter, go straight to the main course:
https://www.ovh.com/world/dedicated-servers/game/1901mc01.xml
Your patreon is sitting at $59, not that much more until you can afford true single thread performance!
May seem like overkill, but great single thread performance with 4 cores and plenty of RAM will get you a long way. Possible modded and other game servers without any hickups!
Edit: Do you only get $30 from those $59 or did it just go up after creating the post?
Edit^2: Should germany be an acceptable server location, the best german hosting provider has auctions: https://www.hetzner.com/sb
I've been able to get some running with Wine.
Just get Homebrew, then run brew update && brew install wine winetricks winexe
After you have that installed, download the windows version of Steam, then go back to the command line and type wine
and then drag the Steam exe file into the command line.