You are right, I think we can't blame Mbappe or a single player of PSG because they didn't get good results in the Champions League. We all know Mbappe is a good player and he will do his best for the team but he can't do everything by himself surely he needs to be in a good team and we should wait to see if Enrique can give him this chance or not because currently, Mbappe is in the good form. However, there is currently a high possibility for Mbappe to leave PSG during January, and this this case PSG should rely on other players instead of him.
One player will not be able to lift the performance of a team alone without support from other friends in the same team, the same goes for Mbappe and indeed no one is to blame for what has happened so far, basically the level of the PSG team is not as high as other top European teams. so it is difficult for them to compete to win the UCl title.
The PSG team did everything they could and even spent a lot of money, but they were not able to win the UCL, so the team should be able to learn from all that and to make a strong team and be able to win the UCL is not instant, everything needs a process like what Manchester City did.
I think the possibility of Mbappe leaving PSG is quite big in January or at the end of the season, and that is good for Mbappe because his career can be much better in another team and it is also good for the PSG team which no longer depends on Mbappe.