EFC is more than what my parents can pay?

I think it’s because all my cousins went to super expensive private colleges: Northeastern, Harvard, NYU, Amherst, Georgetown, etc. with middle incomes. I don’t know if their EFC was like mine or not. They have a lot of faith in me receiving scholarships and grants, maybe a little too much. They’re just trying to be supportive and I appreciate it, I just don’t want them to be disappointed.