Here's a study from a few years ago about online gambling in America (New Jersey):
https://socialwork.rutgers.edu/centers/center-gambling-studies/research-reports-and-questionnaires/prevalence-gambling-new-jersey
Summary of data on gender:
- Men (72.8%) were significantly more likely than women (66.9%) to have gambled in the past year and to gamble either online‐only or online and at land‐based venues.
- A higher proportion of women (84.3%), compared to men (67.2%), endorsed land‐based only gambling.
Overall, men were over‐represented in the high frequency (once a week or more) group and women, in the low frequency (less than once/month) group.
- Women primarily endorsed a preference for purchasing scratch‐off and lottery tickets and playing bingo. Men were more likely than women to engage in sports betting, live poker, casino table games, and bet on horses; older men, however, endorsed a preference for gaming machines.
- Men averaged slightly more gambling activities than women (3.4 v 2.6) and were overrepresented in all the problem gambling categories (low, moderate and high‐risk); in contrast, women comprised a larger proportion of non‐problem gamblers.