I still didn't expect Liverpool to lose at home to a lower ranking team or maybe Liverpool would focus more on the FA Cup, but I think the team can still rest enough to play in the FA Cup against Manchester United later. Indeed, player rotation must be considered to maintain fitness but Liverpool shouldn't lose at home or maybe underestimate the opposing team, Liverpool's next game in EPL will be against Tottenham and I think these are the two teams who are struggling at the moment.
It does not make senses if a team like Liverpool that has great chance to win the EPL is focusing more on FA Cup than the EPL itself.
What happened to Liverpool is not because of that reason obviously, but there must be other reasons why they played so bad in their last few EPL matches.
Next match against Tottenham, it is the chance for Tottenham to make a revenge and take over Liverpool's position on the standing table.
I can say that both team are not in their best form lately but Tottenham shows better result than Liverpool.
I predict it will be a tough match and maybe the final result will be a draw.