Interesting question my friend, in my opinion a gambler who has only gambled once or twice cannot be fully called a gambler, especially if he has no intention of gambling again in the future. Oh yes, I also have another point of view, logically the word "gambler" means someone who often (is used to) doing the activity and if for example someone only gambles once or twice then in my opinion it still cannot be called a gambler because it is not yet a habit but of course there is a possibility that in the end the person will become an active gambler when for example he feels interested in the activity which usually starts with a scenario of success in winning at the beginning of the trial.