Armpit fat for males?

hello, i feel weird asking this, but i am having trouble getin rid of the fat in my armpit region. i am not overweight, i am 14, weigh 129 pounds, and am 5'7 and a half. i workout every day. and i have a 6 pack, so it looks kinda weird to see my stomach really ripped, then my chest area is prettyin shape also, but it looks like i have excess body fat in the armpit region. are there any exercises i can do to target that area for muscle, or should i just keep doing cardio to burn fat? thanks!