PSG already got what they needed to have. In the last season, they had superstar players but they didn't have a coach like Enrique in this team to help players have better teamwork and they have it. Also, Enrique is experienced enough to make PSgeven win the Champions League title.
But other than this, they have to give Enrique some more time and provide him the players he needs, Mbappe leaving PSG was harmful for them.
Enrique's own abilities are indeed quite good in terms of coaching a team like PSG, but winning the Champions League will always be a very tough challenge as long as Real Madrid can continue to dominate the League. Apart from that, the players in the PSG squad itself also still have an influence on the entire team because when any team plays in the Champions League, the strength of their respective players must really be there with a very good level of talent. And PSG hasn't had that in recent years.
Despite having the money and players, PSG has failed to win the deal. Now, things look even more difficult without Mbappe gone. Enrique is a brilliant person. He is doing what he knows. He's changed his team and his approach. Though it will take time, I wouldnt count them yet. They have a past of recovering. Not forget, they have long been a top competitor in Europe. They simply havent been able to pass that last obstacle. Though who knows, this season may be their rebuilding year. Perhaps they will surprise everyone. Perhaps they will settle into their rhythms and dash towards the crown. And, should they not, well, there is always next year.