I need to lose weight to be accepted at school

hello, i'm a female and i am fourteen years old.

i don't know how much i weigh but i look fat.

i've gotten to the point that i resent eating and don't eat much.

i know that is not going to make me thin.

i want to be accepted at school. i'm trying to plan out a diet.

but i don't know what foods would be good for a diet. please help