"I'm ashamed of my reaction on the touchlines after the penalty was awarded," Pérez said after the game in an interview with broadcaster DAZN. "It was the result of frustration. Referees make mistakes and that's OK. What bothers me is that today the players had five minutes of VAR and five minutes without it and so on. Everyone that's played knows the influence it has on the players, referees and assistants now... It's a different game.