While watching TV with my kid, I've watched various advertisements of gambling nature (let's say for example, Rummy123, RummyCircle, A23 Rummy, etc.)
These are all specifically Indian ads, but I'm sure you may have seen various gambling advertisements, some banners at boundaries when cricket is ongoing, even in any other sport. How would a kid ignore those things, they might just come and ask you about what is it. Till when can we lie to them? Don't you think that the frequency of such ads must be less in order to let the kids not get trapped into gambling and don't do it at such a small age?
It really depends on what country you're in and what you're using to stream TV programs these days. Many countries have banned gambling adverts or impose heavy restrictions on them. If you watch Premier League football or those of other leagues, you'll often see sponsorships by major gambling sites these days - all around the pitch and on the shirts of players even. I don't want much TV and find it hard to recall if it's currently allowed in my country. Each country has it's own peculiarities when it comes to advertising though, one thing that shocked me was when visiting America and seeing the hardcore drug advertising taking place, basically telling the public to tell their doctor what to prescribe for them, it was mental.