Here, Valencia actually gave a game that wasn't that bad in the first half. They were even able to lead with a score of 1-2 in the first half. But one mistake put them at a disadvantage in the second half because they had to fight by relying on 10 players to face Barcelona who became increasingly aggressive in the second half. And clearly this is something that benefits Barcelona in the second half. So Barcelona scoring 3 goals in the second half is a very normal thing. Maybe if the opponent was not Barcelona but another weak team then maybe Valencia could have maintained their lead. But because the opponent is Barcelona, only fighting with 10 players is clearly a very fatal disadvantage.
But I think playing with 10 players and having your main goalkeeper get a red card is a nightmare for any team. You play with 10 players and you have a bad final defense because he is the second goalkeeper. I think even if Valencia plays another team that is not from the relegation zone then Valencia will find it difficult to win the game. I don't underestimate the second goalkeeper but with a 2-1 lead I thought the game would end in a draw. I think the opposing coach will try to increase the number of speculative kick attempts.