No offense, I don't believe it when people say they can't find a job. No one likes to hear this but McDonald's is almost always hiring. And believe it or not, they are amazing to have on a resume of a high schooler (I'm assuming you are one). Can you ask? Have you asked your parents to let you tag along to buy groceries? Have you asked if you can do chores around the house to maybe earn some money towards groceries? Do you exercise? If not, you should start. Junk food sucks but it also depends on your activity level.If they only buy junk foods, I think you should talk to them and encourage them to buy some healthier snacks or foods than really have a health benefits.