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Both teams have their own strengths and weaknesses this season. Barcelona has been extraordinary since the start of the season. Even if they remain consistent with their same performance as at the start of the season it will be difficult to stop Barcelona. But unfortunately Barcelona is not always at its best. And yes, Barcelona's main problem is just their consistency which is sometimes lost. And makes them sometimes lose points. So that initially Barcelona led the Laliga standings, now Barcelona can only be ranked third.
I think we all know what the main problem is with Barcelona failing to maintain consistent performance this season. Hansi Flick is forced to play the same players in all competitions because they are the only ones he can rely on, but on the other hand, many of these main players are young players whose fitness is sometimes compromised due to fatigue. Not only that, injuries are also often a problem why Barcelona lose points in several matches.
The second line players in the Barcelona squad are not as good as the main players, so that is why Hansi Flick cannot rotate his players in several matches because their performance is never the same. These are the shortcomings of the Barcelona squad that we can know, but there are still many other shortcomings that we can mention.