Exactly the most important thing is to have the winning mentality and always be with the head to victory, I understand that not everyone can have this head and understand that they can identify with the victory, the PSG had more stubbornness and immediately tried to win by crushing Inter immediately.
I agree with you that when players are confident and have a winning mentality, the road to victory becomes facile. And that is why psg was able to become champions last season. They were able to win every title.
PSG performed very badly in the first round of the Champions league. But after that we saw PSG winning every match consistently. PSG dominated every match in the knockout round. And this was possible because of the strong morale of the players and Enrique's excellent match strategy.
It is not easy to predict how psg will perform next season. The team is going to face strong opponents in the first round. If they are not in the great rhythm like last season , it will be difficult for PSG to get through the first round of this season.