Any ideas on how I can leave?

Been in a relationship for 12 years. We have 3 younger kids together and 3 older from different relationships. We are not married. He works and I work when I can. I have been driving him to and sometimes from work for approximately 9 years of our relationship DUIS. When I work all my money goes to food,the kids, and household supplies. He makes almost 3xs as much as me. Right now I'm between jobs and once again he refuses to feed the kids properly. He has plenty of money for fishing and drinking. He pays for the fishing for the day with his friends. He doesn't like to do anything with his kids he says it costs too much money. I understand the expense but he can always justify fishing and drinking. People are here almost every weekend. Sleep in the garage on our couches etc. We feed them too. He'll usually pay for a bbq then. Once everyone is gone we get ground turkey, rice, potatoes. Haven't had milk for 2 weeks. When I go back to work when I find a job I will once again buy the food and take care of the kids. I guess I'm tired of him not taking care of his family. He is not there emotionally, finiancially, in anyway. It's like he ignores all of us. The older ones he doesn't because they are drinking age. It's like we can't be happy around him, comfortable around him, because he will do something to make all of us miserable. Like be crabby, rude, disrespectful. Naturally like some stupid things on a hot day can't turn air on. I've been trying move out due to this. I think if he doesn't want a family or help take care of his family I need to move. It is a verbal and mentally abusive relationship. Does anyone have any ideas on how I can get help with moving expenses expenses. He will not help me. Can't get any money until I get a job. This is so bad for me and my kids.

You could ask your parents to loan you some money or a close friend just enough for you to move out and be okay for 1-2 months until you find a job

You could asked for child support. He is obligated to help you. However, seems to me that he is an alcoholic and does not want to get better. You should seek a job, permanent one. Maybe go back to school, and get some degree, it will take some time but you will have better chances to get a permanent job. it really sucks to know that there are parents who do not care about their children. I hate that. Good luck.