Anyone else have this problem?

Ok so I'm very self conscious about a few things. One of them is armpit sweat. Literally, all year round, no joke, I have sweat patches under my arms. They always make me feel so self conscious and I've gotten to the point where I'm going through 2-3 t shirts a day because of it. I also wear sleeveless tops, but I burn so easily and jumpers to cover it up are a no-go it's so uncomfortable in the summer. I'm wondering if anyone else has this problem or tips on how to fix it. It makes me feel disgusting, and I don't even feel hot, I just sweat. I have tried so many different deodorants but none work! I also have a school uniform that I always sweat through, so if anyone has any tips I'm open to them!

Fanks

UPDATE

thanks guys for advice, so far I'm trying the Rexona clinical strength (i believe it is called Degree in America) and it is working very well!!

Thanks y'all!!