I'm a teenager too. Most of my friends, the vast majority, have jobs. Those who don't have either relatively wealthy parents/ grandparents/ relatives who will sub them. This, however, is unlikely for most teenagers. And if you don't have such relatives, tough shoot, frankly.
Face up to the fact you cannot always rely on your parents. My parents made me get a job. They also noticed that with a job and boyfriend my grades were slipping so they let me give it up after a while. But I did do it, for several months, and I saved some money up so I didn't have to be so reliant after all.
I'm not expecting you to want to do it, or like it - what I think you ought to do though, is to face up to the reality that you need to learn to do some things for yourself. Like earning money. At least give it a go. If you hate it, pack it in once you've earnt some money.