Most gamblers have the habit of acquiring money in order to gamble on it. Just like a drug or alcohol addict who will attempt to do the same to fund their addiction. Unless you follow up your strict "No" they will continue to nibble at you.
Gender does not matter, an addict in a addict, the first step to stopping them is denying them the money.
Someone who is addicted to gambling will of course behave the same and there is no difference between men and women and choosing not to give them money is certainly the right choice, because once we give it then it will become a habit for them and the habit of a gambling addict is of course them. will be lazy in doing their work and all they can think about is gambling in the hope of getting a big win on the bets they play.