Need help with 6 pack?

Hey, I'm a 14 year old boy who is really skinny but is athletic. I calculated my body fat% and it said I was 7%. I know that is disgustingly skinny, but I can't help it tha I can't eat alot. I'm 5' 9" and weigh 110. I run alot and I used to use the slendertone system abs belt. If I suck in my ribs poke out. I used to have a 6-pack when I was 10, and I would like one again. Any help/training programs I could use. And dont tell me how diet is the most important thing, cause I know. I want examples of a diet/workout. And also, don't tell me 14 year olds shouldn't have 6 packs. Thanks Alot