I'm mad with my parents because they secretly saved money for my future
Did you not want them to help support you?
Yes, I told them that this issue is mine and they should not save money.
This is something they did with good intentions for you. You should not get mad at a parent for saving for the future.
Saving money is a waste of time. I need to learn it on my own.
You shouldn't be mad about this, they can hold on to it for an emergency. You can still learn all the skills you need for saving or if you take their money you could save all of it.