i have a weird ass body

i don't go anywhere... Im a student online from home.. I don't exercise as much.. But i have this issue where my underpits stink so bad and i'm not even doing anything???? Like i would take a shower and an hour later , it starts to smell?? Like wtf????? Idk if i have a disease.. But they smell for no reason , and it's starting to frustrate me.. but i'm not even running or doing anything... I put on lotion and deordorant everytime the smell gets worse , it drives me crazy . Do you know what i can do so i won't stink? trust me i shower every other day and wash my face and take body baths tooo but it still smells