I want to leave

So I’m in a relationship that I want to get out of. We’ve been together 4 years and have a 1 year old daughter. We both agreed on breaking up already BUT I’m a stay at home mom and sadly depend on him on basically 100% of my income. We live with my family that I also want to get away from. I want to live out and live on my own with my daughter and want to get away from my family and fiancé. I have no friends or family that will help. I’m all on my own.. i don’t know where to begin or what to do 😔