I want to end my marriage but

I don’t know where to start. I’m SAHM. He works but sucks with money. We never have ‘extra’, and I sorta feel trapped. I don’t feel comfortable putting my baby in daycare either. I’ve been putting up with his alcoholic ways and broken promises. I haven’t had a real job in years and honestly terrified but I’m not happy with him. My kids are taken care of and my rule is for him not to be drinking/drunk around the kids. I distanced myself. We’re not intimate at all. He says he wants to change but it’s all BS. He was drunk lastnight, drunk this morning at 8am, and drunk again tonight. He WAS around my kids this morning and tonight. I feel so disgusted. I hurried up n got the kids to bed safely. I keep trying to save money but he spends it and I never know how much he even makes. HELP