The average player who plays at the world cup level is highly motivated, who doesn't want the world cup? Especially a team like Italy who has won the world cup 4 times, surely in the minds of the players they really want to repeat the glory days of their national team. But it's not an easy thing, not just changing the coach or just motivating the players can turn things around - they need more than that, tactics, mentality, and the quality of individual players, those are the important things needed by the Italian national team right now because they are still very lacking in these three things.
That depends. Even last time, during the 2022 Qatar World Cup, some of the powerful clubs were refusing to release the players initially. Times have changed. Playing for the national team during the World Cup is no longer one of the most cherished ambitions for many of the players. Clubs are providing them with insane salaries, and obviously the loyalty will be towards the club rather than towards the national team. When Italy failed to qualify for the 2022 edition, I noticed that the players were not that upset.