In this match, Liverpool can easily win if their defenders play without mistakes. Because Paris Saint-Germain will give away a lot of open positions because they have to score. This means fast attacks and easy positions for Liverpool. However, the defense has a lot of work to do in this regard. The goalkeeper may not be able to save his team like in the first match. Therefore, they have to play with the least mistakes in the defense, otherwise Paris Saint-Germain can eliminate them.
Remember PSG is not an easy club that Liverpool can get away with easily, mistakes as you said of often come when the pressure is too high but I trust Liverpool in this but still they have to put more effort even though they are secured the first leg but that came as a surprise which was a narrow escape for them. PSG movies ready for this match and in this in this situation they have known their faith but not completely. They still have hope of qualifying for the next stage because it a a goal in their house and this time around they are going to appear in Anfield which Liverpool will want to protect themselves from any embarrassment from PSG.