You can indeed find some hobbys or something that you like to do but it is really hard to stop gambling because will get really addicted to it but that is not that bad to gamble.
The only thing that you have to do if you are gambling is control yourself and lose not that much money, gambling is only made for fun.
Yup! it is made for fun but if the gambler is really addicted to gambling then he can never control himself he can never control his bets and is always thinking on playing, an addicted person can never say no to gambling even if he likes some other hobbies.
You just have dont find a hobby but you can also do some sports and that is also good for your body and also much cheaper than gambling and also not that wasted.
But find something else with gambling is hard because it is also hard to stop with gambling so you need find something really good to stop with gambling.
If he is not addicted then I think he can just get some other hobbies and activities he would surely like, but in the other way around if he is addicted then I think he can really never stop his betting on gambling.