How to deal with my brother driving me crazy?

I need help, my brother is driving me crazy. He is 28 years old has only had one job when he was in high school. He went to school for 9 years cause it was too hard or changes his interest. He wants to be a writer he keeps waiting for someone to find him. Instead of him working a part time job and trying to do what he wants. My parents give him cash and a credits cards. I am 20 but anytime I need it my parents say you don’t have any or ok ok fine here you go. But my parents just hand over everything to my brother. His girlfriend left cause he was lazy fat and going nowhere. He broke his labtop and my parents talked to him but then instead of not letting him have a computer they let him get it fixed. But all I get is a stupid computer. I don’t get a new one, cause anytime he does something to his or our computer in the study or basement, he gets my cause my parents and my brother don’t care to ask me cause I don’t count. He eats so much he is loud he says I am always wrong and tries to prove me wrong he is so messy . I have told my parents but my mom just says get over it. I need to know do my parents care about me? Is my brother their favorite? Do I need to find a way to get out? Will they never care about me? I need help.