Help me !

I am a 15 yr old girl. My family is super judgmental on my dads side.. I weigh 105.5 lbs now... My mamaw looked at me along with my dad and stepmom and commented on my weight and how i am gaining and I’m started to get fat. Since my mom and dad split when i was 4-5, My dad talks shit about my mom in front of me and my dad causes me a lot of emotional damage and physical. He causes me to feel as if I’m not good enough or as if my body looks horrible and weird.. It affect my physical Appearance and so, i started to lose weight around the time he and my mamaw called me Fat. I also started to fall into depression and i got more anxious of going out into public. My boyfriend and my mom tries to build my self esteem back up and tries to make me happy. I’ve gotten told by several people who can’t understand my situation that my Dad is somebody i should have in my life but honestly, my dad is emotionally and mentally abusive. He threatened suicide after an argument between him and my mamaw because he’s on pills.. So, I told him after everything that he’s lied about and put me through, i no longer wanted him to be in my life since he can’t get his act together and that its affected me negatively. He judges my mom and tries to tell me lies about my mom and says he’s still in love with my mom although he is engaged. I can no longer live in such a negative life. I do not blame all of it on him because i know i haven’t been that good of a daughter.. He has said multiple times he was gonna get me taken away from my mom and i have told him id get put in foster care because he is unfit as a father. I have been trying to clean up my act, I’m starting to try to study for my permit and I’m trying to get my work license. Ive been trying to do better.