Why do I smell bad and sweat so much?

Every morning I wash up and then put in deodorant . A few minutes later i sweat under my underarms ALOT and i start to get musty . then i put on more drodorant and it doesnt work . nothing works and i sweat alot so during skew i have to wear black hoodies so you cant see it . but sometimes i swest through my jacket . please help ; any remedies ?