How do I lose 80 pounds?

I'm a girl and I'm 11. I weigh 167 pounds. When I was 9 I weighted 153 pounds help. My mom isn't concerned neither is my dad I've never been called fat by anyone but myself. I can't go to a gym. I do sit-ups and I eat healthy but I eat a lot of healthy foods. Help me.

Jogging, running, etc. If you're not sweating profusely, you're wasting your time. Also, keep hydrated when you're active.

well I wish I was 167 pound (75 kg) I am only 74 pound (34 kg)
but the only way to loss weight is sweat like get into a sorner