Lmao shit. My computer restarted when I had open ssh sessions still. There where still things i was testing that I hadent pushed into systemd yet. Oops.
Discussion
'screen' is the answer. It does a ton of useful stuff, so well worth learning.
Got a link? If not I can look it up later.
Probably just need to 'man screen'. If not: https://www.gnu.org/software/screen/
Derp I dident know it was something already in linux systems. 😅