Adding to the discussion on the rules set in soccer, I've always found it bad design that the referee has only yellow and red cards for penalizing individual players. Especially the red card is a hard penalty, which leads to the referee having too much influence on the outcome, and to counter that, the referees don't like to give out cards too easily.

Now, the consequence of that is for example that players fake injuries constantly, as they can't be reasonably penalized, but the faking might yield a penalty kick or a red card to the other team. However, it makes the game incredibly cringeworthy to watch.

Contrast this to ice hockey, where the minimal penalty is a timeout of 2 minutes. It's enough to put your team in trouble, but you can recover by playing careful defence for 2 minutes. So if a player fakes injuries or otherwise behaves in a minor bad way, the referee can give them a 2 minute penalty - enough to punish, but not enough to skew the rest of the game.