When professional athletes get to the level of playing for Madrid or Barca, players talking before games has nothing to do with their motivation.
These are professionals of a very high level, some player verbalising before a game doesn't change anything, players at this level are already motivated.
People are trying to focus on the mental aspect and highlight that Yamal has a bad attitude, but in reality, we haven't seen any evidence to indicate he is actually unprofessional (bad physical shape, not training properly, not able to run etc).
I think its just that he hasn't learnt how to influence the game when he doesn't have the ball. He is a player who relies on having the ball to feet and who wants to take many touches, and he is brilliant at that, but when he doesn't, his off ball movement and one touch play is lacking.
This is something which can come with experience and coaching. He should become a goal threat also with his off ball movement and not just his dribbling, this is the reason why, for now, he doesn't score as many goals as he should. One of the things that the world class wingers had historically and have to score goals is their off ball movement. Salah, Son, Sterling, CR7, Mbappe etc.
When he learns this he will be one of the greatest of all time.
