Too many stars in one team will be difficult to train, especially at that time PSG was coached by a coach who was not experienced in training star players like Messi, Neymar, and Mbappe. So the impact of an inexperienced coach will make the game not compact and the players only think about individuals and high egos, that's why PSG found it difficult to compete in the UCL League when they had many stars.
But now under Enrique PSG's game is more collective, he can mix the team even though there are not many star players. League One, whoever the coach is, PSG will easily get the trophy because League One teams are less competitive with PSG. However, Enrique's PSG this season has performed impressively in the UCL League, they have great potential to enter the final and even win the UCL League title for the first time.
More stars in the team should have made it easier for them to achieve several prestigious titles but that could not be done. Previously people said because the coach was not able to carry out his duties properly and on the other hand a number of players had excessive personal egos making it difficult for them to achieve several prestigious titles such as the Champions League.
In recent years since Luis Enrique took charge of PSG, they have not been able to reach the Champions League championship, but overall, the performance of his team has been much better and now they look much stronger in the Champions League so they still have a big chance to reach the final.