I'm going to leave for another country to chase my dreams and cut contact with my family
Did you ever discuss the reasons behind it with your family?
No, I did not.
It's fine to have dreams you care about, but you should let your family know about your plans. It's wrong to cut them out of your life.
I don't feel even if I told them that they would support me.
I think it is worth a shot to talk to them, you really have nothing to lose by the sound of it. The worst they could do is reject you and you move anyways right?