PSG have signed great player but have failed to win the UEFA Champions League because they're not just good enough and playing elite teams seems to be one of the tough challenges they're experiencing every season in UCL.
PSG president, Nasser Al-Khelaifi caused all of this. He would have sold out Kylian Mbappe longtime ago but he failed to take such decisions and have a big problem to deal with currently. He's yet make good signings of the replacement of Kylian Mbappe,
I don't think it would be so good to blame just one person for this thing that continues to happen to PSG every season. Because PSG, which used to have more stars in their squad, was also unable to win the UCL title, so this is certainly not just one person's fault. But it is more about the pressure of the game which is always easier in its own league, which makes it difficult for PSG to develop when facing elite teams entering the UCL competition. And PSG must be able to fix this as soon as possible before next season starts again.
But the problem is also about Mbappe departure on a free transfer, and that was the wrong step taken by Nasser Al-Khelaifi because he only gave Mbappe one season of contract extension. Therefore, Mbappe left on a free transfer and as a talented young player, of course PSG really suffered a huge loss from Mbappe departure. Therefore, I think it is very natural that Nasser Al-Khelaifi is also very emotional about cases like this, how could it not be, because Mbappe was always given special privileges at PSG but in the end, Mbappe really left on a free transfer. But indeed, because PSG still has a lot of money then of course, PSG should remain in the best situation next season to prove that PSG can still achieve great achievements even without Mbappe.