Think about orphan.

I heard a similar story before. The girl drives BMW, wears rolex. And keep complaining about their parents.
What I can say is, don‘t feel depress about it. Maybe your parents busy with working to earn more money to make sure the family member has good life (now and future). When you grow elder maybe you can understand about this. You should be satisfied with what you have now. If you're studying, just make sure you don't fail your study. Some people might has more serious family problem compare to you. Like their parents quarrel all the time, parents divorce, parents like to gamble. What would they feel?
If you have time to feel sad, you can find some other meaningful things to do.