My partner is a gambler

First baby daddy was addicted to women. Second baby daddy is addicted to Coral and betting shops 😫 Seriously I can’t even make this up! I have tried my best to support him through the ups and downs. I’ve found groups for him to attend, tries to control him, left him, nothing works. I am at a point now where enough is enough and I really want to walk away. I’ve lost my mum last year and he was very supportive, I wouldn’t have coped without him. But it feels like he took me from one hole and placed me in another hole. I’m 6 months pregnant, I have a 10 year old from previous relationship. He has been in short term employment and hasn’t been contributing towards rent, bills, food etc very much. I am the size of a bus and I still go to work everyday so we can have food on the table. He keeps telling me that he doesn’t want me to work anymore but he is unable to get a job or keep one. I feel so lost and lonely. He started working this week. He got paid today and guess where I found him? Just about to walk into Coral. Then he tried to lie to me that he wasn’t going in there and how dare me provoking him. I can’t cope with this stress anymore and I’m starting to think that maybe it’s best for me to have the stress of being a single parent to my both children rather than stress with him and feeling like I have an unwanted adopted almost 40 year old son! Any advice and thoughts are greatly appreciated. 😓