Later he open up to have been using $500 for gambling per day, he said all these started when his wife left him, that he isn't into gambling at all, but I can't ask why his wife left him in the first place, but does loneliness make people become addicted to gambling or it's something else.
There is no connection between loneliness and gambling except that person is already a gambler then he can utilized the opportunity of being lone to start gambling more or making some random deposit to his account to constantly keep gambling. Sometimes is from mindset what you think of is what mostly come into mind, and I don't see any reason why someone wife will leave him and he turns himself into gambling addicted instead of becoming a drunker or smoker because these two things are easily being triggered by loneliness and not becoming an addicted gambler.