Omega-3 Improves Your Pet Health

I want to opolygize for this freakisly long story.
My life is absolutely terrible.
I had several health problems which lead me to be able to do nothing I like. The teachers at my school are on my case for missing so much school even when they know about my health issues, my parents want to send me to consoling.
And on top of all that, my family make my life absolute hell.
My brother is as evil as the devil! (not literally)
He randomly says something rude, he stomps through the house just to annoy me (I have anger issues as well and he takes advantage of it)
When ever hes talking to loud I tell him exactly this “can you please be quiet” he doesn’t listen, so I keep telling him, and after the 4th try I yell out “shut up” and my brother just says “nah” and I get mad and start telling him to stop being such a rude pig and my parents get on my case on how I over-reacted!!
My dad usually does nothing but when he does, he never says anything to my brother he Just keeps saying how I should over-react and that my brother wasn’t doing anything.
My mum is literally an anger freak and starts calling me an idiot for acting like a child. And she tells me to leave my brother alone.
BTW, I’m 13 and my brother is 11.
The relation ship between me and my family is horrible.
I honestly feel I’m not related and will do anything to make them feel bad for how they treat me.
But then I realize how bad I would feel, but I want them to see everything from my point of view so they realize how horrible they are.
Its mostly, no, its all because of my brother.
WIthout him everything would be fine.
He is rude, selfish, heartless. He hurts me, mentally and phisiclly, he nearly let my cat die last night when my cat got locking in his room while his collar was caught on something, when my brother realized my catw as in there, he jsut sat there and went back to playing game. I had to run like crazy down the hall to help my cat which lead me to nearly have an asthma attack (literally)
The only time i’m happy is at school and home alone with only my pets. I have honestly thought of running away but then I think that I won’t be with my pets anymore and I will eventualy run out of money.
I have even imagined me killing myself, but I would never do that but I fear I may lose control.
Please I REALLY need help, I can’t take my life, I just want to escape from my family and start over.
Please tell me what to do, I’m constantly depressed and am starting to take out my anger on my friends, I don’t want to live like this anymore!