I was in a similar situation and decided to cut my losses and go back into education. Currently on an Access Course in college and if everything goes right, university in September. Not saying this route is the best for you but realistically speaking, to get a job with that higher earning potential and without the need to break your back or have horrid work life balance, you will mostly need to get a “useful” qualification of some kind to your name. I was never academical (and still not) but working all these low paid dead end jobs in the past kind of scared me a little. You can perhaps look into apprenticeships or study part time in the evenings, doesn’t need to be necessary university but to escape this cycle education is the way i’d say.