Even if you lose it's fine there's nothing to be shy about it wasn't your day
Maybe shyness isn't the right word I mean maybe just lack of confidence will be appropriate to this and it can really affect someone's thinking while he gamble because the way he thinks will be negative and it can interrupt the game. The main reason why people doesn't have confidence while gambling is he's still a newbie and don't know exactly what to do and he thinks that he can't win in any way which isn't helpful. However eventually it will build his confidence with the help of his experiences.