Child abuse

Y'all I don't know what to do any more. I've been dealing with this hit for years. The gaslighting and manipulation is driving me over the fucking wall. I just got into another argument with my dad. He was an asshole to me until I cried and then laughed at me for it WITH MY LITTLE BROTHER. HE'S SIX. SIX FUCKING YEARS OLD AND HE TREATS ME LIKE SHIT BECAUSE MY FAMILY TAUGHT HIM TO. I'm just. I have no energy left. I have to clean my room and finish my homework or else my parents are both gonna be pissed off, but I don't have anything left to give. There's so much more to say but I'm exhausted and it's too complicated to explain any further right now.