In this current age and Time, it has become extremely hard to keep kids away from something that is widely done like gambling we just have to educate the kids on the fact about gambling and how hard it is to get out of gambling once you become huck to it, and to avoid that kid's needs not to be greedy and should not stake money on games unless if the regular computer games.
The only problem is will the kids open up about this addiction because if they don't you wouldn't be able to help them overcome this terrible habit. The internet has made gambling a normal, they even run gambling ads on different websites constantly exposing teenagers to this lifestyle at a young age. I was told a story of a young boy who found a way to use his mother's mum to gamble and he got enticed into this addiction through a gambling streamer on YouTube. Nowadays we see the so many musicians advertising bet sites and claim to be winning from it, they forget that a lot of these kids are looking up to them.