I think the pressure Paris saint Germain gave them in their first leg really put them in a big fear and I am saying this based on experience, whenever my team went to play with another team and they pressured us, in the returning leg most of us will still have that mentality that they will pressure us even more in the returning leg and whenever you have developed this thought inside you everything will become hard for you and even things (skills) you know how to do before you won't be able to do them again. Yea there ony hope now is in EFL trophy and I am not sure if they will win it but for the premier league that one is certain.
In second league, there was no pressure on Liverpool while PSG early goal was good but still game was well under control for Liverpool, but they were not able to convert their chances this was really problem they have done good job for equalizer, but they fail which give good advantage to PSG.
Liverpool players were had good performance but sadly their luck was no with them in this game which hurt them badly, and they fail to bring themselves back in game in extra time PSG were having good control of game which ended into their favor while on penalties they again fail to convert their chances and ended with 4–1 which give good opportunity to PSG for having their quarterfinal against Club Brugge/Aston Villa which is also good as they can go through for semifinal as well.