Did yall move out at 18? Were yall allowed to?

I feel like once i hit 18 i wont be able to move out. Ill probably be called “ little “ by the way my parents are since im 16 they still say im little when i ask i want to work. When i hit 17 im going to start saving up so me and my boyfriend can move into our apartment at 18 but i just know my parents will make a problem out of it and say im little and i wont make it this and that you know. My boyfriend is 16 and a roofer and makes good money cause hes dad is in charge, he owns his truck already worth of 50k. So i think we both are going to save up we will have enough for our apartment. I think they will bring up my brother as an excuse as well. Hes 20 and hasnt moved out and i think their going to bring that up too like ohh “ your brother hasnt even moved out yet “ this and that and thats how i think i wont be able to move out at 18🤷🏻‍♀️ are they right or wrong?