But I'm sure there are lots of female gamblers in online casinos because some of my office friends often play slot gambling on their cellphones, but I don't know for sure whether they really have a lot of users, because slot machines just need luck and don't need a mathematical strategy, so in my opinion Online casinos are more popular with women too.
The idea that casinos are mainly a male domain is evolving. I did some research on my own, and here's what I've found. Men tend to engage in gambling more frequently and for longer period of times. They take greater risks and hazards, and invest more money in their games. On the other hand, women tend to exercise more caution. They lean towards playing with smaller amounts, prioritizing enjoyment over chasing for big wins.
While I don't have precise statistics, I belive that women often gamble for the sake of enjoyment and to connect with others, especially in the social realm of online gambling. Men, on the other hand, might display a higher level of competitiveness and a focus on monetary gains, but that's just my opinion.