K I WANT A LOT OF ANSWERS :) (DEODORANT)?

Since I am a teen I sweat /: . UH! But at school mostly! It's not a lot of sweating,but i smell a little musty sometimes(It's really not strong. But if I hug someone I guess that you can smell it since you have I lift your arms up.) LOL. But anyways this might sound weird but i just wanna know how many swipes of deodorant do you put on? (up is one and down is 2)But I was just wondering what can you use to also help the smell I use PERFUME under my armpits sometimes(And I cannot put on deodorant on at school cuz then it becomes stronger :/ but just tell me what you would do THANKSSSS