There's too much detailed analyzing going on imo. Was every decision Max made spot on? probably not.
But just look at that Real squad, i think it's fair to say we have to punch above our weight if we want to have a real chance to win against them. We have to play the perfect game. Every player has to give 100%, no errors allowed, and we will have a chance, but once a few players have a bad day (throw in some bad luck as well), it becomes too much of an uphill battle and the difference in class will eventually show on the scoresheet.
Sucks, cause overall we didn't play a bad game imo. But that's CL. Margin of error is close to zero, ask Tottenham.