Not everyone has a friend who will teach you how to place bets, many of us learned this ourselves, and perhaps long before online casinos appeared, and I don’t even remember knowing that there was a ban on playing under 18. And I gained experience myself, tried figured out the rules myself, tried to understand what these fors or handicaps mean. There is no big difference in how we get experience, what matters more is how good you are at gambling and even if you are taught all the basic rules that cannot be broken in gambling, I am sure every player will want to try to do this at least once, because their experience is priceless.
Everyone can learn gambling without needing the help of explanations from other people, they can learn it themselves by betting regularly with low bets and of course they will understand the features of the game and some basic strategies for finding opportunities to win. But the main reason for determining the age limit of 18 years is to prevent those who are still of educational age from being affected by the impact of gambling and those who are still financially dependent on giving money from their parents. So one of the main factors why age limits in gambling need to be set and even some countries that legalize gambling also have age limit requirements for gambling.