AIO for being angry at my parents ?

My brother is 18 and i 20 (F). I was never allowed to date and even untill now i block myself and reject everyone because of everything i've been told since i was kid. I grew up in a muslim family but we weren't that much into religion. I drink and do everything. He just moved to another country for uni (i did that 2 years ago and i've been living alone), he just got a gf and everyone is so proud and happy for him. It pisses me off because i am not allowed and even if i can do it because i'm an adult and live alone, I have this mental blockage and dating stresses me out. I feel like everyone wants to use me or that i just cannot ever be in a relationship which makes me so angry.