Getting rid of armpit fat (tips/tricks?)

how do I get rid of armpit fat/rolls (or armpit vaginas as my friends like to call them)

I want to cut my hair short but if I did then I would have nothing to cover the fat, I'm super insecure about them and my friends said that they also thought that they were really gross, so that didn't necessarily help my self-esteem haha

also I used to play basketball but when I did I never noticed any change really with the rolls, and when I decided to add some more arm workouts into my daily routine, I noticed minimal-no improvement

any tips or tricks would be greatly appreciated, thank you so much!