(19m) trying to get started

I am 19 years and from NC I am currently employed full time with my step dad while starting community college but anyways a little back ground. My family is very toxic in many ways but some of the main ones are my step dad has taken steroids since he was 16 and he is super narcissistic, bi-polar, controlling, egomaniac among much more he is someone who is all about himself and he treats people like me and my mother like absolute shit but manipulates everyone around him into loving him and thinking me and my mother are lazy,useless and insane. There is a lot more to him but I’m not gonna type 1000 pages about it. Now I know I was just defending my mother but I can’t lie to myself and say she is a saint she does things that most husbands would get mad at such as excessive gambling, arguing,(not listening) and just to mention they have both cheated numerous times but the first was my step dad when he cheated on my mom with a 17 year old girl from the gym he was going to at the time, I was 10 at the time and when my mother found out he tried to kill her among other things but as I said they have both cheated and once again there are many things i am not including due to the amount of instances. I also have a 8 year old sister who is a top star gymnastics and cheer athlete and she is growing up around these two constantly doing things their way and I can visibly see the effects it has had and is having on her. I know this is a lot and I’m not gonna lie this isn’t even the point. About a year ago there was a massive argument at my house that resulted in my step dad chambering his gun and threatening to kill us which not the first time but we ended up getting kicked out and I went to live with my mom and grandparents and sister for a while but then I moved in with my now ex and that didn’t last long soon after I moved in with a good friend from high school which I am now dating and have been living with for almost 8 months now but as we all know finding a job fresh out of highschool seems to be impossible rn well que back to step dad (we have talked like twice in 4 months at this point) I should have also mentioned he owns a multi million dollar business but yet he makes his entire family feel bad for months for every purchase he makes for them even considering they had to beg for that one in the first place then he goes and spends 100,000’s of $ on stupid shit like guns, rocks, tools he already has among many other things but for example my moms mom died around 2 years ago and she still doesn’t have a headstone because he told my mom she could pay for the funeral and he would help cover other bills well he didn’t and she ended up stuck financially and still is but like he will tell my mom that they can’t afford a headstone and then go buy two 100,000$ trucks and then flip out and hit her because she gets upset he can pay for that but not for her moms headstone (for the record he refuses to let her get a job) but back to the point before he contacts me after 3-4 months and asks if I want a job and offers to fix my car he “was not able to until I agreed to work for him” then he held that over my head the entire first 2 months but then that car died and we traded it for the one I have now but he refused to put it in my name so if I quit he will take the car and my dog,80% of my belongings and other things are at his house but if I quit he will not allow me to come get it but he also pays us 14$ an hour each and provides no food drink gas housing or help for any basic needs but if I was to bring that up I would get belittled and mocked for weeks but I just started college aswell and I am paying for tuition out of pocket let because I am still on his income as of rn so I can’t get financial aid nor will he help with it or offer any emotional support for that matter but rather he complains to me that me going to school is going to take to much time away from how much I’m gonna be able to be working and then told me he isn’t going to pay me for when I’m in class but still expects me to pay for everything and I also forgot to mention me and my friend are building our own tiny home from start to finish so that is another large costs with other small emergencies and he also expects me to make the hours up but I have 20-30 hours of homework a week now on top of cooking for the entire week, working on our house, getting everything out of his house and just having a life and I’m just kinds stumped on what my out is and I was wondering if anyone can offer any advice? If you did take the time out of your day to read this then truly thank you and I hope life treats you amazingly