In my opinion, perowsnal bans on casinos and gambling will never work, in fact it will make the problem worse, people will look for clandestine places to have fun, also knowing that casino games are for adults, there should be no problem, everyone is responsible for their actions, in that sense, gambling addiction will never be stopped, what a Government that does such a thing can achieve is that everything is ruined and generates more problems than solutions.
The main issue is that not all countries legalize gambling. Some countries prohibit it, but even so, some people will still seek out entertainment like gambling. Even if they do it knowing it carries legal risks, government prohibitions won't deter those who enjoy gambling.
For example, many people currently gamble secretly in countries where gambling is prohibited. This is compounded by the availability of online gambling, which has clearly made gambling even easier. Therefore, it's likely that government prohibitions will only create problems, not provide solutions.