I want to runaway and be independent but I feel stuck

I am about to turn 20 soon and my parents still have my location and check it every time I leave the house. I do great in my classes, have a part time job, goes to the gym, and have my priories straight. I don't party either. Every time I hang out with my friends, if it is past 7pm, my mom constantly texts and calls my phone and then ends up calling my friends and their parents as well. She says that I am irresponsible and I do nothing besides going out while I only go out once or twice a week. It's got to a point where it is unbearable. I sat down with her and had a talk and she told me she trusts me as a person to make decisions but does not trust what other people will do to me when I leave the house. The other day, she sent my brother into town to go looking for me when I was taking an exam and I told her I can not answer my phone because there is a Procter. I have a long term boyfriend but she does not know about him since it is against my religion and culture to date before marriage. I do not know what to do at this point. I tried faking my location on my phone but that does not work. I tried turning off my location but that only made situations worse. I want to move out but my parents pay for my tuition and I want to stay in school. Any advice on what else I can do to at least gain some freedom or other ways I can find an excuse to leave the house?