Just looking at the statistics from this match, it's like seeing PSG against a very weak team. Where PSG managed to make 27 shots in this match while Liverpool only managed 2 shots in this match. That's quite surprising. But yeah in the end and the most important thing is Liverpool won as expected.
PSG actually played well but they were challenged by a world class goalkeeper in his excellent day. Without Alisson and his great saves today, perhaps Liverpool would have lost this match, and even lost it landslide.
They dominated the attack and created lot of good chances but it could not be goal, it is true that this is all thanks to Alisson who also made 9 saves directly to be able to keep PSG from having goal advantage, haha even though PSG is superior in the dominant game pattern but the final result is as I expected with Liverpool winning.
Next in the second leg later PSG must face Liverpool away, this will put pressure on PSG because playing at home they failed so for the away match the PSG players will definitely experience slight decline in mentality.