PSG team could not use a player like Lionel Messi well. One of the reasons for this is that the coach of the team does not have enough knowledge of how to use a player like Lionel Messi.
So far I have never heard anyone say that to PSG except you today, because if you say the team coach cannot use a player like Lionel Messi, it means that other players cannot be used better by a coach. But when there was still Lionel Messi at PSG I think the coach put him in a very suitable position so that PSG can continue to win trophies in Ligue1 even though PSG have never succeeded in the UCL as long as there was Lionel Messi in the squad in the past.
The opinion may be because PSG failed to win the UCL last season. If the coach could not use a player like Messi, maybe other players are very difficult to control. Any coach would feel proud to be able to train a player like Messi, he would give Messi the freedom to run in any area to look for empty space.
Now Messi has become a thing of the past for PSG. Luis Enrique's arrival came a bit late, when he set foot at PSG the player he most wanted had already left the club.
Luis Enrique has to work hard to form a team with the players he currently has, he has not yet found a suitable strategy to utilize the players available in the squad he leads. Enrique needs time to adapt and build good chemistry with PSG players, I'm not sure PSG will be successful in the UCL this season, but in the following seasons maybe he will.