I am really confused whether the match was between Barcelona and Real Madrid or Barcelona and the referee. After watching today's match I am confused about the definition of handball. From my point of view the referee's decision was definitely controversial and in favor of Real Madrid. Such a decision at crucial moments of the match could have resulted in a loss for Barcelona. Although Barcelona won the match in the end. The two handballs and the offside decision were very controversial. Even the commentators were confused about the referee's decisions.
Hahah 
robbery is Real Madrid heritage!!!Indeed, Barcelona won it and smashed them down with 4 goals, but the referee's decision was completely unfair. All the time he takes the decisions in the favor of Real Madrid. 1st goal of Killyan Mbappe is offsides, but the referee refuses to check VAR. Clearly hand ball of Tchouameni in the penalty box was denied. Before the second goal, Real Madrid committed a foul on Yamal Jamal but the referee didn't even look at it. No red card for Tchouameni for stopping Ferran Torres from the clear opportunity. Even a clear penalty for Raphinha was denied, like the referee didn't take any action against it. So I will never hesitate to say that Real Madrid did all of his best to efforts through the referee to win the match but unfortunately, one more time they failed to win it.
Besides the fact that Hansi Flick is a great coach, he won all the El Clasico of the season like he is the second person after Pep Guardiola to win all the El Clasico.