Yep, dealing with players' egos will be always a hard thing for the coach. Mauricio Pochettino (the previous coach) has experienced it, he realized it to be one of the biggest problems in PSG squad. Now, the new coach (Christophe Galtier), gradually to have a better approach to dealing with the egos of PSG starts players. I never heard of any issue about Messi's bad attitude, most of the issues about bad attitude problems are from Mbappe and Neymar. These players are always unpredictable and difficult to manage.
Galtier was chosen by PSG because of his CV to deal with player ego in Lille. So far he has shown that he is able to repeat it in PSG too. I felt about Galtier is similar to Carlo Ancelotti. They are both coaches who don't make too strict rules as well as punishments on their star players but they can manage their players so well.
They are like friendly coaches with their players but are still able to constrain their player ego. In addition, they are wisely enough to enlighten their star players and can use them in new positions and lift their players to new highs in their career.
We shouldn't be surprised with Ajax's result against Liverpool tonight. It was already too difficult for them to continue in the Champions League after the group stage. Liverpool just finished them off by a clear 3-0 victory. Nunez is still performing impressively. This was his 4th goal in his last 5 games.
Ajax lost a lot of important players in the summer and they are not able to replace them with other players but still maintain their performance as the same. They got some big defeats in Champions League that are not what they usually experience there.
I am not doubtful about ability of Ajax to come back because they have a very good Academy and very efficient scout team. So they will be able to detect more youth talented players and grow those players to star ones again. However the process might need a few seasons and in the meantime their fans must be familiar with bad results.
Inter played well and won, if they can't get out of this group, it would be better for Barcelona to continue from the Europa League instead of the Champions League. At least they have a chance to win the trophy. If they had left this group, perhaps Barcelona would have been eliminated in the next round.
Plzen is a weakest team in the group and it is very normal to see Inter Milan destroyed Plzen in the match. This big win of Inter Milan also puts the end for Barcelona in Champions League. This is also the second consecutive season Barcelona were not able to pass through the group stage in Champions League.
In previous seasons, their fans were upset when Barcelona were beaten in semi final, quarter final or 1/8 round but now they have to accept even much worse results.