I worry about my moms life on nearly a daily basis

I’m 16 and my mother has a boyfriend, or ex, I’m not sure they’re VERY on and off. My mom’s boyfriend cheats on her alot, if it’s not that, he’s arguing with her, lovebombing, crying on the phone, and he’s also still married to his wife that he’s SUPPOSED to be divorcing. There is also another lady in the picture who is apparently his ex that he still hangs out with, this has been going on for a good 6-7 months, recently she’s been ‘crashing out’ as she calls it, and getting absolutely inebriated drunk when he doesn’t answer her calls at night, driving around, saying she wants revenge, and note this; I also have 4 younger siblings that I watch for the most part, I’m sadly very mature for my age said by both my mom and her boyfriend, because I babysit those kids 6 days a week, from either like 9am-8pm.. I’m utterly exhausted and my mom’s crash outs, driving around drunk, being absolutely hammered is taking such a big toll on me and I can’t even cry it out anymore and it sucks. I worry for my mom’s life every time she’s driving drunk and I vomit from the amount of anxiety it gives me. My mom and her boyfriend also fight constantly, then make up, then fight, of course, her boyfriend brings me into it, because he wants someone to side with him and of course.. I see both sides out, I see the good and the bad. I never talk back to my mom either or talk to her about any of this because she gets VERY guilt trippy about it, I believe it’s also called narcissism?? she shows many traits too…. She doesn’t let me get a job, or get my drivers license/learners permit either, because she claims that she worries I’m going to get in a crash since she’s gotten into 5 where I live. I worry so heavily one day I will turn out like her, I get mad at my girlfriend all the time, I go off on her, I just think I’m such a shitty person even though I can’t control it. I really needed to get this off my chest