>Our data shows that female players primarily play female champions, in fact, it's something like 97% of female players only play female champions. Male players are evenly split between male and female champions, so Male players play 50/50 between male and female champions. If anything, whenever we make a male champion, we are abandoning most of our female players, since most of our female players won't play male champions at all.
explain this phenomenon

https://www.invenglobal.com/articles/17395/riot-97-of-female-league-of-legends-players-only-play-female-champions