Some people always get this wrong, not everything is relating to a spiritual issue especially gambling, it's more relating to a mental issue than something spiritual for instance you shouldn't be referring an addicted gambler to the church or spiritual home for prayers, rather such cases should be handled by a mental health practitioner, psychologist or the rightful professionals to handle the situation, your spiritual leader or teacher is just a religious leader meant to handle spiritual cases and not the right one to handle such cases, I don't know about other societies but I've seen people in my region make such errors and it needs to be addressed.
In simple logic, that's the way it is. The solution is the right mental psychology to handle it. But when you believe in religion and related to spirituality then people who have good spirituality should not become gambling addicts because in my religion it is prohibited. But if the spirituality is bad then it is considered normal. So I do believe that spirituality affects the mental state. There are also spiritual beliefs related to problems that are brought to spiritual experts (e.g. shamans). It seems absurd, but my country may also exist. So don't take it too seriously. Because whatever it is, it seems to be a good effort to get rid of the addiction.