How To Get A Toned Body And Lose A Few Pounds?

I’m 14 years old and i weigh 9 stone and im 5″5, im constantly been bullied at school because of my weight, they always say that im really fat because ive got man boobs which are irritating and im trying to lose weight and get a 6 pack, any ideas of how to lose a few pounds and tone up the body?
Also i have tried to go for runs 2 times a week, but im constantly tired after 5 minutes of jogging, is their any other ways of exercise that dont involve running or any ways that can make me go for runs without being tired after 5 mins? I’ve also tried abdominal workouts but they dont seem to work