The internet is your friend. With everything posted online nowadays, it is not that difficult to find podcasts that focuses on gambling addiction, habits, and activities as a whole. In addition, with the ongoing pandemic, most people have shift their attention in creating content comfortably on their homes- in which podcasts shine.
My friend used to do podcasts on a certain topic about relationships and all. They uploaded their talks on Spotify so I also do recommend checking it out on the list. Like what I have mentioned, the internet is your best friend. Just one search away and thousands to millions of results would show.