How likely is a white straight male non iv drug user to get hiv or std's if he's having casual and using condoms?

Twelve STDS: I am not sure 'casual' is in any way a definable medically sound term that means we understand each other. There are twelve common stds. Those that are caught from in-sertive, skin to skin sex (penile to vagina) would be gonorrhea, chlamydia, herpes, hpv, syphilis. Scabies and very low risk for hepatitis b and hiv. Theoretically these have to be on the list, but they would be low risk in general.