PSG's mentality in the Champions League always changes every season. This season PSG has good players with great talent, but their performances are still not very impressive. Of course it is still possible to hope that PSG can improve its performance this season with the depth of its squad, but in my opinion everything is very difficult.
So far I don't think PSG is one of the teams that can win the title in the near future, but that doesn't mean they can't achieve it. PSG still has to try hard and make good use of the market to bring in players who are truly quality and fit their needs, meaning not expensive players but whose game is just enough. They need an experienced squad, especially in central midfield and that must be prioritized.
They don't have players that are special players, it'll take some time and seasons before Luis Enrique can assemble that kind of a squad to compete for the Champions League. I do wish at times if he was the coach around when they had players like Lionel Messi, Neymar Junior and also Kylian Mbappe. I know what he would achieve with these lads. They can successfully win the League 1 Championship bit not the Champions League.
They're not ready to win the Champions League, they don't look really good and ready. With Kylian Mbappe also willing to go at the end of the season, that's another weak link you feel? They'll be knocked out of the Champions League in the next round because they'll definitely meet a stronger side!