I'm thinking of sticking up the bank for money because I need it badly
Robbing a bank isn't a good way to get money.
It's bad and it is definitely something that I don't want to end up doing
I'm happy you understand that robbery is wrong. It is considered a crime, and you can get into serious trouble if you go through this. How about asking your parents and explaining your situation, I'm sure they would be happy to lend you some.
I'll just do it then.
Yes, asking your family for help in a desperate time will be your best bet, and I hope that it works out for you. If they can't help, there might be other things you can try, such as online fundraising.