Why the bias? should gambling be only for Men?
it depends on the type of game, because there are some with a high rate of female or male presence.
At least in my country in Italy, scratch cards or the classic lotto and its variants have a strong presence of female players.
Conversely, in betting rooms where sportbets are placed it is practically impossible to meet a woman.
agree with what you are saying, that the number of women who like sports betting is very small, but for slots or dice, the number is quite a lot and it has been proven. In my environment, there are almost no women who like sports betting, but there are many women who play slots and some are even young.