After seeing PSG performance in the group phase, of course we can judge that they will not be able to go further in the Champions League this season because the other teams are stronger than them. Also with the players, of course they don't have the mental strength to be able to win the championship. Not to think that PSG is weak this season, but they are still not strong enough to be able to overthrow Bayern Munich, Manchester City or Real Madrid this season. I think Real Madrid and Bayern Munich are too strong this season so if PSG faces them of course PSG will have difficulty beating them.
I think PSG have never been a character to be a Champion in Europe. Their struggle in group stage is another clue of their lacking mentality. Mental strength is a dynamic aspect that can be influenced by team morale, leadership, and the specific challenges encountered during the competition. PSG has no player with considerable fighting experience, because they use to have top players when they needed.
However, football is inherently unpredictable, because upsets and surprising performances are part of the charm of the Champions League. PSG, with its formidable squad, should not be underestimated, and the outcome of potential matchups against stronger teams cannot be predetermined. Moreover, teams evolve, and the knockout stages provide an opportunity for teams to reassess and improve. PSG's roster includes world-class talents capable of turning the tide in crucial matches.