it is cheaper to just put all the blame to gambling as an activity itself and not try to help the addicts and build a more sustainable gambling industry that would give them profit and help their economy without ruining the wellness of their citizens but if the government is corrupt expect nothing from them
For addicts it is hard because many refuse help. You can't really forcefully help those that don't want your help in most cases. In any way, helping addicts on a mass scale is impossible. The best would be limiting the availability of things that are addictive.
some politicians even use underground gambling to launder their polluted money
That doesn't make much sense, you can't launder corrupt money in an underground establishment that is illegal. Money laundering requires a legal establishment with which one can legalize money from illegal activities.