I agree with you, what I have seen is that, for example, many children between 10 and 18 years of age have become children without self-esteem and antisocial behavior because they spend more time isolated with only their phones on social networks. games can even bring more fun, but it has to be something moderate, spending hours in games and not dealing with real world things, is something harmful
Children will really encounter gambling while they are growing up. It can't be avoided.
For me, it's good not to stop them from doing so, they will just be confused and curious as to why they are being prohibited to do gambling. Let them experience it and allow them to face the risks. As a parent or guardians, what we need to do is to feed them more information about the risks of gambling.
Minors aren't that dumb to just experience those risks. They will understand the risks of gambling depending on how good we are explaining it to them.
I don't want to divert the subject, but on social networks my wife saw a video of a boy who was quite small and wanted to be a murderer when he grew up, I say this because everything has really been distorted, children have access to a lot of information, which, the parents always have to be supervising them, and just as that child wants to be a "murderer" others easily enter casinos, but I think the trick of all this is in the parents, how much the parents are dedicated to their children, if they really believe they are being raised right? away from those dangers, if so, I do not see why a minor access casinos, this is my opinion of course.