i have problem with my ab muscles. PLEASE ANSWER!!!?

i've been working out for a while and got my six pack but that's not the case. I've noticed that my upper left ab is really small and the upper right is so small that it looks like i don't have it. i asked people about this problem and they said that there is nothing to do. because the ab muscles are genetics and you can't make them bigger or something. EXTRA DETAILS: 14 year old working out for a year. no weights 180 cm tall THANKS FOR ANSWERS but i'm sure there is something to do about it. any exercise i can do?