The reason why Real Madrid lose against Juventus is Real Madrid use a strategy where it depend on Bellingham as an attacking midfielder. They're more comfortable when the midfielder backing up other midfielder and working together.
But it's clear there are so many chances in Real Madrid, but their strikers weren't able to maximize it.
This is a new debut for Jude Bellingham in Madrid, because it is still in a friendly match coach Carlo Ancelotti trying to find the right position for him, Ancelotti has made several game options throughout pre-season to find the maximum performance from all players. However, this defeat will see Ancelotti return to make more correcting in his first team before LaLiga starts