Hi Twilight,
So sorry you’re going through this. Unfortunately nothing we say or do will make a difference, if he wants to change he has the option of getting himself to meetings and making a real shot at recovery, but if he isn’t ready yet there’s no point in you putting your energy into fighting for him. Please try talking to any services you have available such as Womens Aid or a solicitor, he should be giving you the house to live in in with your children. If he’s abusive then all the more reason to have him removed. The fact he hasn’t left for you shows he’s still in the grip of addiction and is thinking only of himself. You need to put you and the kids first, you deserve better than this x