You are right PSG has struggled in UEFA Champions League lately. They have lost to Arsenal and Atlético Madrid, and tied with PSV. Bayern Munich has stronger team and better winning record giving them an advantage. However PSG still has Kylian Mbappe who can change game. Although Mbappe has not led PSG to Champions League victory he remains threat. This matchup is exciting. Bayern Munich consistency might be too much for PSG but Mbappe could pull off an upset.
Where did PSG get Mbappe from? He has been a Real Madrid player for several months. PSG's attack is left without its main forward, but in some matches it plays better, in some worse, Dembele is a good attacker, but he has already had conflicts with Enrique, because of which he even remained on the bench, so PSG's attack is not all right, and if for Ligue 1 this is not critical yet, then in the Champions League it is very noticeable.