i read somewhere and it says that best use mild soap.
i'm not sure if dettol is mild.

for women can use feminine wash. but some source also say that use mild soup is better than feminine wash.

Why not ask your dad to teach you how to wash?
That's what my dad does to my younger brother.

Feminine wash for female only la. Cause their private part got different PH level so need different type of soap and it's more sensitive.
I think guys shouldnt be that sensitive right.

Lol. UTI is more common in females not only because of that reason la.
One of the reason is because the anus in female is nearer to the urinary tract and female's urinary tract is shorter than males. Many other reasons include wearing too tight panties, holding urine in for too long, wiping the wrong way after pee-ing, etc.
There are ways to prevent one from getting UTI, such as washing up and pee after sexual intercourse and eat cranberries.
IMO, guys private part are cleaner since they don't have discharge often or moist condition where bacterias can breed. Wash with normal mild soap should be good enough.

imo, its perfectly fine to just wash with water. unless you're very dirty la.

feminine wash is for female la. the ph level 'ngam' for female private parts wan la. nothing to do with male's.