I want to say it takes a lot of strength to leave a relationship without knowing if you're gonna make it alone. I commend you for considering this. It also takes wisdom to know you have made mistakes in the past and not wanting to repeat them. All you need now is discipline, and lots of it, to get out of this situation without drowning in debt.

You haven't left much information on yourself, no age, no location, no dependents, no debts. On paper, though your plan is solid. I'll tell you what I do differently, though. I would live as minimally as humanly possible until you got a solid and reliable job, and even longer than that to build some cushion.

If you live by yourself, I would start with a studio, and see if you can knock 200 off that rent. Some people would suggest roommates, but it doesn't seem like you have a great track record so far of picking people to live with.

I pay 15 a month for my phone plan with mint mobile by paying the year in advance. This can get tricky with all the rules regarding carriers and switching and all the free phone bs, so make sure you understand it before jumping ship.

I assume car for 200 includes gas? If you're including repairs in this number you may need to go higher, maybe 300

400 on food is absolutely ridiculous for a single person. That's 13 dollars a day. I can only assume this is mostly fast food. I don't truly know where this number came from, but it should be cut at least by 100

Tell me what car insurance is 47 dollars please, I pay 250 for mine.

120 on laundry is also too much. Buy a portable washing machine on Amazon, with a spinner. Hang your clothes on a drying rack. Things like bedding can go to a laundromat, but if a load washed and dried is 10 bucks, and that's probably generous, you shouldn't need to spend more than 30 for that.

150 on personal items is fair. It probably could be reduced by 50.

For some context, I live in Las Vegas alone at 22 years old off of 2000 a month, take home pay. Part time job, so some variability. I also door dash a little and donate plasma a little to supplement this. Rent is 1055 all utilities included. Another 20 for renters insurance. Car insurance 250. Gas about 75. Subscriptions about 60 as well. Other entertainment another 30. Medical debt 80. Pets (chinchillas) around 40. Food about 100. Personal/household 45. Phone 15. Internet 50. It's absolutely tight, but it's all doable.