How do I leave

I was I a very well paid job in technology, earning 180kpa in the uk. I had my own flat in London but I don’t drive and come from the country side. I got with my baby daddy who lives where I grew up and decided I didn’t want to raise our baby in London. He’s successful in his own right but self employed so it’s not as consistent . He’s a great dad and he used to be a great partner. He’s abusive, he has hurt me so badly, when I was pregnant as well and then I lost the baby. I just am so hurt, destroyed and broken. We have two dogs who I love but I gave up my job to be a sahm and I’m struggling. There is so much I just can’t even begin to explain. I just need some love, Some reassure some help