I don't know if you can do anything much about normal male crotch odor. I've spent all my life around men and in sexual relationships with men, so I'm used to the smell and like it. I don't know what your orientation is or what experiences you've had (you look pretty young, but that doesn't necessarily mean anything), but the smell can be disconcerting if you're not used to it.
Guys can get yeast infections and fungal infections down there, by the way.
Your diet can profoundly affect your body odor.
Cotton underwear can help with crotch odor.
Trimming or shaving pubic hair can help.
I've heard that some guys use a bit of powder down there to absorb moisture. You're supposed to avoid talc, but something with corn starch is okay.
One of the facilities in my new job has some sort of vinyl-ish chairs that make me sweat like the dickens. We're in Southern California, and we have chairs that increase body heat. Real smart, that.