I also pick Liverpool here.
Real Madrid only have advantage in head to head, they won 7 times, drew 1 time and never lost against Liverpool. But, head to head stats is pointless if their current performance is bad.
Both of them do lost many players, but as long as Liverpool have Diaz and Salah, they will be fine.
Real Madrid is indeed very superior when viewed from head to head. And actually Real Madrid also looks superior if we look at the depth of the Real Madrid squad, although it is not much different from the depth of the Liverpool squad, which also has quality that is not much different. But Real Madrid's inconsistent condition this season makes us hesitate to choose them. So choosing Liverpool is also the choice that many people will choose. And with the record of not losing in the UCL this time, it will make us believe more in Liverpool's superiority. But don't forget that this is Real Madrid. Where they can sometimes bounce back very quickly and beat any opponent no matter how strong.