i think it would be really helpful for you to include which country you're from. in the US, i would think it's pretty comparable, but in other countries, there are probably different cultural factors at play that make it difficult to speak to without taking them into account

from the way you write and your dismissal of e.g. candy crush as "not a real game", i think those cultural factors are probably what's preventing either 1) women from feeling like they're allowed to participate or 2) women from revealing, around you, that they play games

fwiw, i wouldn't assume that women as a whole assume games are silly or childish. some women probably think that, for sure, just like some men do. but their viewpoints are as varied as women themselves are. it's very possible that they simply view them as a masculine hobby that isn't "for women", or just haven't been exposed to any they'd be interested in, or, similarly to you, wouldn't consider being interested in mobile games to be "real gaming"