How can I stop suffocating in my family?

ARRGGHH I can’t take it anymore!! I’m suficating in this family I want to move away or kill them all or something. In this “loving” family I’m a burden, or so everyone says. I’m bad luck, a black sheep, a stick in the mud. I don’t belong in this family at all..no i’m not adopted, or a step sibling, but it’s tempting to say I am. Why am I angry? Beacuse appearently I can’t do anything right, I’m only average, and not speacialized in a certain area. Academically

• I’m only average
• Has never gotten on the principal’s list 90% and above
• Have no speacial area to have my parents gloat about, and since i’m suposedly the daughter of 2 asian mathematics I’m supose to be a super brain at math, but I’m not. Appearance wise
• Short
• under weight
• too skinny for my own good Family
• Mother = way too over protected, keeps telling me I was a mistake and i should just leave.(it’s not my fault I wa born I never asked to be given birth to at all!), a retard(because i’m only average), Stupid and all of the names in the book. She keeps trucking me around to places and never lets me go anywhere, because of one MAIN excuse I’M SHORT i’ll get r a p e d, shot, kidnapped, but the thing is SHE’S the one whose ALWAYS complaining how she ALWAYS has to drive me around EVEYWHERE(I never asked her too, I said I could walk myself or bus to places. That’s what legs are for WAlKING)
• Siblings, one is a super high graded acedemic shitty student, who has leadership and almost everything. the othe is an athlete in which she has way too much dress costumes forher damn competition, NON of her competitors have that many custom made dress like her. Not even the top seniors!!

I’m So SICK of this whenever I try to grow up they won’t let me! I try to be more responsible but I magically some how make things worse when it’s not even my fault at all. I really can’t take this anymore try being in btw the 2 sblings! ones smart the other is athletic, I’m neither, I can’t even have a little of both because everything i do is always taken away from me. For example my art classes, I LOVE them, but I had to give it all up because my siblings need the money to get more compitition wear or need the University tuition or something else, It’s not fair nothing is ever mine to take.. or to have.!! Forget about talking because then they’ll make me feel like I’m the one to blame for this and that so i should feel sorry for them not me. I’m sorry if this is REALLY long but i just can’t take this any longer, when i’m legally allowed to leave I’M LEAVING!