I would expect the majority of gamblers to be male. That's because men are more willingly to bet their money away for big possible payout in the future. Woman are the better financial planers and more cautious investors, I would expect them to gamble less.
Normally the majority of gamblers are make, like in my community and my country as a whole, it is hard to see girls in view centers watching football matches, hardly you will notice anything like that, but men see it as fun and visit during big leagues like English Premier League and UEFA Champions League. This alone shhows us the reason women are not gambling. Women prefer means they can gather money together with little risks like business.