Well I was in a similar place about 13 years ago. There were other factors, but it was miserable. My issue was that I worked full time in a job with travel, everything belonged to me and we weren't married. I was absolutely stuffed if he was getting anything out of me but I couldn't work without childcare, however poorly he did it.
I really did feel trapped, and I made a decision to just let him do what he wanted. Very long story short he was dead within weeks of him getting everything he wanted, as he had no self control. It's an alarming story, I know.
Anyway the point was I was 32 then, two very young kids, a job I couldn't possible do without someone to look after them for a week at a time, living in an old farm in the middle of nowhere.
I asked people around me for help, not even friends, I asked everyone I could think of.
Some randomish people helped me find a new house to rent, and to help me move, someone else helped with other stuff, someone else helped me find a car, someone else helped me figure out the money side of things. I persuaded my mum to take the kids a week a month or a bit less, and my work to let me do a month's worth of travel in a week. I actually managed it. It wasn't easy, it wasn't fun at times, but all the things I thought were impossible were actually possible. But the key thing was asking for help.
Call Women's Aid, call the Citizen's advice, call the Welfare Rights Officer at the local council, you will absolutely be able to cope on your own, but you need to take the first steps.