Liverpool may have an advantage. It's called neuro11
A small team that takes care of the mental strength of athletes. For free kicks, corner kicks and penalty shoot-outs, they help every player to have control over his emotions. They work with Klopp and the first successes are two finals and 17 of 18 successful penalties. In the League Cup final against Chelsea 11:10 everyone scored and in the FA Cup 6:5, here only one missed. It looks like it's working.
We all know that mental health is very important for any athlete and having a good mentality can be the deciding factor between a player missing and scoring a goal. It looks like Liverpool is really giving it their all to win the Champions League final.
But we also have to remember that the Real Madrid squad is very experienced and they can keep a very cool head under bad situations. Otherwise, they would not have been able to reach the finals.