I often see advertisements for social casinos on many websites and social media, but I don't really understand what makes them so special. As I understand it, you can't win anything there? So it's just a game for fun?
Yeah, you can't lose anything in them.
Have you tried watching reviews on youtube? It's explained there in detail.
Social casinos are designed for entertainment purposes only. In them you play for virtual gold coins and sweeps coins that can be exchanged for gifts/other bonuses or given to friends. Sports casino online (https://sportzino.com/) is completely safe to play, so you don't have to be afraid.