When I was 10, I spent 200$ on a game for iPad without my parents' permission
Oh no! What did you do about it, apologize?
No, I was 10 and I didn't think I did anything wrong.
That's understandable because you were so young, and it's good that you realize now that what you did was wrong. If you haven't apologized to your parents yet, or paid them back, you should, because I'm sure they'd appreciate it.
I couldn't help it because I was only 10, and I didn't even have my own credit card.
I can understand that what happened wasn't your fault. Children can't rationalize their choices. You can only learn from your mistakes going forward, and try to make amends for what you did.