One small piece of professional advice: Figure out what sort of pathology you’ve got down there before treating it. To wit, are these open sores or abrasions? Abscessed follicles? A rash of some sort? Some entity previously unknown to crotch medicine?
The best diagnostic tools for this are a set of eyeballs, a bright light, and a gloved hand, preferably belonging to someone with some basic knowledge. Simply feeling around and soliciting advice from blinded, remote, people, however smart, experienced, and well-intentioned, is unlikely to help much.