Man City's failure in the Club World Cup is a surprise because they were among the favorite clubs. However, this situation brings both advantages and sadness. If counted, Man City has played 61 matches this season. This exceeds the normal routine, meaning there is a possibility of negative effects from this. So, going home gives them a better rest period. They have also received a substantial payout from this tournament.
According to the sources I read, they earned a prize of around £37.8 million. Although it's not much for transfers, it has helped Man City's revenue. Currently, the only EPL team left in that competition is Chelsea. They will face Palmeiras in the quarterfinals.
Source:
https://www.bbc.com/sport/football/articles/cew00782yw2oYes, Manchester City had to lose to Al Hilal in the Club World Cup, although it was indeed a bit unpleasant for Manchester City. Because they lost to a team from Asia, of course it made the team's dignity go down a bit. But even so, there is indeed a positive side that can be taken by Manchester City, because as you said Manchester City has currently played a lot of matches, so of course the players will be very tired. Because they should be on vacation now but because of this competition they have to keep playing. So it is clear that this is enough to overwhelm the Manchester City players. So with their defeat in the last 16, of course the players can have a lot of rest time until the next season starts.
In addition, I think Manchester City's performance also needs to be fixed, because as we know that Manchester City is currently experiencing a decline in performance. That is why they failed to become champions in the English league and also failed to advance to the last 8 in the Club World Cup. Therefore, at this time Manchester City is better off focusing on strengthening its squad, so that next season they can return to being a truly strong and fierce Manchester City. And about the money that Manchester City gets, of course with that amount it is not too big to be used for player transfers, but even so it is quite good for other costs.