If i am 18 can i move from a state where age of majority is 18 to a state where it is 19 would i stiull be able to move out?

Yes you can, since the legal age to move out where you live is 18 that allows you to move anywhere you want in the u.s, now if you are living in a state that you need to be 19 to move out then no. Hope i helped.