So here I am on this site again

. I came here a few times almost 4 years ago, in order to get help with family issues and everything when I first came out. Things were a lot different back then and I needed help with a lot of different things.
Now I still need help though. I'm a MtF trans girl that wants to transition and move on with my life, but I'm unable to because of the financial/household situation I'm in. Currently, I live at home with my twin brother and my mom. My dad was here, but he left in December. But the main thing in my life that has been causing a lot of trouble is my mom. She's abusive, narcissistic, manipulative, and worst of all, very, very transphobic. She's been a big cause of my depression and anxiety over the years, and if it weren't for her, I would've already started transitioning by now.
I've been trying to escape her grasp for years now. I was unable to for the longest while because of my age. When I first posted here I was 15, I believe, and my mom and my dad were still together and things were a lot different. Now I'm 19, have a job, and am thinking of a way I can leave this house and live in peace for once. But I'm not sure how I can actually do that. My dad has become quite supportive of me over the past several weeks, and has said that he would try to help me pay for an apartment should I end up getting one. But I don't know if I even make enough money to support a good amount of rent (I make $5.25/hour plus tips). I'm looking for a new job now but still, things are getting pretty rough and I've been feeling very dysphoric lately. I also am worried about my brother, who is also suffering a lot because of my mom. And if I were to move out, what then? Do I just live paycheck to paycheck for the rest of my life? I don't know, I just have a lot to think about.
I'd love to hear what everybody else thinks. I've been not so fond of life recent;y and have been quite depressed, so hopefully I'll be able to solve some things.