Liverpool have been average since the eighties like us. Yes they've won trophies the FA cup, league cups and a very lucky champions league win and a bizarre win against a team in the UEFA cup who have faded into oblivion. But other than that they've been mostly average, they were a 1 man team for a long time with Gerrard keeping them up there, but they never really challenged for the league other than 2009 and 2014, and both times they messed it up, so it hasn't been plain sailing for them. They have done well in the Champions league this season because they had an early group stage that the other teams made easy for them. Porto were rubbish, Man City played awful in the first leg, plus Roma are appaling as well. Take away Salah, Firmino and NVD they are a pretty average side they just got the luck. It's like we won of probably got at least 10 or 15 points more if Lukaku was still here, he led us to 7th last year, even though we were pretty average.
The truth is football like modern society as a whole is bonkers, Leicester won the league then sacked Ranieri he next season they only lost Kante out of their squad. Conte has gone from hero to zero very quickly, Mourniho won 2 trophies last season despite the fact United draw something like 10 games at home. Many Liverpool fans wanted Klopp sacked earlier in the season, now they all love him. French football is dominated by PSG, La Liga is dominated by Barca and Real, Bayern control German football. Juventus dominate Italian football, they were even able to buy their closest rivals best player Higuain. Football wasn't perfect lets say 9 or 10 years ago but it wasn't as ridiculous as it is now, Southampton sacking a manager than took them to 8th playing relatively good football. If they lose god willing, there will be Liverpool fans wanting him to be sacked.