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When it comes to Barcelona's current UCL play, I have to agree with you. Looking at their group rounds, it looks like they had a nice time! Yes, they're ahead in their group, but they're still playing teams that arent very well known. In the previous season, they played big teams like Bayern Munich and Inter Milan. That was really hard! When it comes to Real Madrid, I dont think Barcelona's present team can compete with them now that they have a new look and players like Vini are back. Does Barcelona not have a strong striker? Its impossible! After all, they do need someone like Lewandowski. I wont bet a dime that they can beat Madrid until they make such big changes
Barcelona is ahead of everything compared to the other three teams in Group H, they will clearly have fun and can dominate the standings easily. However, the relatively weak resistance from their opponents meant that Barcelona had to be more alert in the knockout round.
Barcelona must be able to improve its performance in preparation for facing stronger teams, the fewer teams remaining in the UCL, the greater the challenge they will face. Barcelona must be ready to welcome all the challenges in front of them if they are able to survive further in the UCL.
I think Barcelona will be able to win the next three group phase matches, so that Xavi squad can qualify for the round of 16 with the status of group winners and with a perfect points record. Porto has the opportunity to finish as group runner-up, Barcelona is lucky enough to be in H because they don't face any significant difficulties. Of course the knockout round will be more difficult, especially if you meet the favorite team from another group winner, but I think this will still be a long time coming and currently Xavi is facing a series of injuries to his core players.
On the other hand, I think Barcelona is quite ready to face any challenges this season, their unbeaten record in La Liga and in the UCL is proof of their performance this season. Of course sometimes they also have difficulty winning, Xavi really understands this, and I think when Xavi finds his squad is complete, it will be quite easy to improve the team performance.