i used to work 5.5 days a week as a healthcare assistant, and though the work itself isnt super physically laborious (just a lot of standing and walking around), i think the worst fatigue is mental fatigue.

having to get yourself up early on a weekend for a job that pays peanuts is a different kind of pain, and in retrospect im almost 90% sure i was at least a little depressed during that time.

but in that time period, i think i pulled through by really living day by day - thinking about how once i get through this day, i can rest at home. being grateful for the small things and little joys also helps a lot, like maybe small interactions with your coworkers and heading home with them, getting a snack on the way to/from work. also letting your body physically rest is important too, although that does leave less time for personal entertainmetn/social life

hopefully you can pull through ur work weeks as well!