2. You can enlighten him slowly through some anti-gambling propaganda films, so that he can improve his understanding ideologically, thus generating self-control.
You can persuade some experienced people to point out some unknown tricks in gambling, why you lose more and win less, and how to bring a person down through gambling, so that he can reflect on it.
4. Help him find a meaningful job. As long as he has a stable job and income and less free time, he won't always think about gambling.
For a person who likes gambling, don't lend him money, let him know the bitter fruit and let him correct it, otherwise everything will be out of the question.
6. A gambling abstinence group can be set up so that some people who have successfully landed can share their experiences and how to prevent themselves from indulging in gambling again and help each other.