I am new to this school and lately plenty of people tell me that I am pretty & great personality. Why do you think I haven't been asked out?
Sometimes it will take a while for new people to become comfortable around you. Simply be yourself and be patient, things will happen naturally.
Not trying to be mean but they might r trying to be nice
People don't exactly know you well enough. Try hanging out with them more & get to know you them better. Be patient, these things take time :)