Although your parents and grandparents i'm sure mean well, they have not realized your all grown up.
I'm not sure moving out will do the trick just yet , it may make things worse for a while adding unnecessary stress to your life, and things could spiral out of hand.
Let's see, start off by learning to drive, if you make good money you should have no problems taking driving lessons.
Get your license, and then look for a car.
Seek a car or car loan you can easily afford, but this will offer you much independence and freedom.
Slowly show your family that although they mean well you are a grown up there -fore conduct your self as one.
In the meantime try to be less dependent on them, even if it means taking local transportation to get around , again acting like an adult, and just getting them ready for the fact that you are one, and are enjoying that independence.
If in time they do not seem to come around then maybe moving out will be your next step, but please make sure you have your own car, and make enough to be self sufficient, other wise you will go from depending on someone to depending on another ( the boyfriend) and again that could strain the relationship and ruin it.
Make sure you and he have a good strong foundation , because living together is not easy...
Remember, you could always get your own place, your own privacy, that would be even better, than depending on anyone else!