IRL, it always happened on me all the time. When I was playing I didnt know why I kept losing on the bets, I am playing electronic bingo machine and one of my favorite gambling. Then I noticed when I am the one watching I can see how they can back to back win the bets. Though I know this is just a lucky game but if youll check the pattern it seems like there are some players on the house side which is ask to play and show players that he is winning. Maybe a tactic but we can also considered it as deception as he shows playing in a good play but once you try you lose.
By the way this is own by government entity of our country.