Addiction is a manifestation of human weaknesses when a person cannot stop in time and this applies not only to gambling. A person by nature is prone to find hobbies for himself, and sometimes these hobbies can be too addictive. For those who play sometimes, as you say once a week or once a month, this is definitely not an addiction, especially since I even admit that such players can win, so it is not worth saying that gambling is bad. It is bad when a player stops controlling his actions in gambling, in the same way you can lose self-control in other hobbies, so these are individual qualities of a person. We are all adults and no one is able to make decisions for us, you need to be responsible, then everything will be fine.