To be honest, I can't understand why you would be disappointed with Real Madrid's performance today, because as a Real Madrid fan, I haven't seen Real Madrid playing well in the last 4 years. They have been playing with the clear objective of just winning games. It doesn't matter if they score a lot of goals or if they play well. As long as they win, everything is fine. This has been the Real Madrid coach's attitude since he arrived at the club. While Barcelona has been very concerned about playing well.
I assume you aren't a true fan of Real Madrid, so you can't feel the disappointment. Instead you give praise to Barcelona game. 
Dude, it is not only about winning the match but it is also about the way to win it. Even if Real Madrid won the match today, they played rather badly. They were lucky that they scored one goal because they only played with 10 players since minute 39'. It was too bad that Mbappe got a red card.
Real Madrid has dropped much on their performance in the last few matches (both in domestic competition and in UCL). I think Ancelotti has a problem with his tactics, he needs to change the tactics a bit. There is also a problem of Real Madrid players' mentality. They seem no longer playing like in the past, nowadays they can't show playing as a solid team. Some players looked to play under performance as well. This is a serious problem for Real Madrid, Ancelotti must be aware with this problem.
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That reckless Mbappé red card was just embarrassing. He must calm down. Four straight reds now in career? Kylian, you are better than that
Is Ancelotti, though, losing control of the dressing room? Consider this: Kroos retired; Modrić is 39 and plays part-time; the young guns - Camavinga, Tchouaméni, Bellingham - are gifted but need seasoned leadership. Barca, meantime, has that cohesiveness, that vitality, hell, they have young people going about with the confidence of legends
Madrid will suffer greatly in the Copa del Rey final and maybe be embarrassed in La Liga's critical Clásico on May 11th if they fail to get their tactical act together immediately. And that's not gonna be pretty. You think Marca is tough now? Wait till following another Barca beatdown those headlines start to appear. Madrid better hopes Mbappé comes back disciplined, hungry, and prepared to take leadership. Otherwise, it’s bye-bye Carlo