Many have criticized Liverpool performance in the first leg, and I agree that they were lucky to win. Alisson Becker was impressive, he denied many PSG chances, in my opinion it was his best performance of the season. I am quite sure that luck will be on PSG side in the second leg if Arne Slot does not change his squad game strategy, considering that Luis Enrique is very experienced in reading his opponent's weaknesses. Given the ambition of both teams, it is likely that both will be able to score goals.
Honestly, in this first leg, Liverpool played not really in good condition. If we look at the statistics, even Liverpool is quite bad in some lines, but I admit, their defense is very good in facing various consecutive attacks from PSG.Check this image:
taken from google-UCL
Statistics show that PSG has tried their best, but their attacks were not even able to penetrate their defense strongly, there were several chances to score goals but great saves were done by Liverpool.