It depends on the kind of loneliness you are talking about because I don't think there is a connection between loneliness and gambling, although loneliness can result to other things but I don't think it could result to gambling on less you have interest on gambling, however one of the stuff that result or makes someone to start gambling is being jobless and at that moment you are vulnerable to anything that can easily Fitch money for you and perhaps gambling will be the only solution so that's one of the things that makes someone to join gambling easily.