Barcelona has struggled defensively this season, conceding more goals than any other team in La Liga. In contrast, Real Madrid has been the least conceded team in the league so far.
One reason for Barcelona's defensive struggles is their lack of depth at the back. They have struggled to replace the loss of Gerard Pique and Jordi Alba, who have both left the club, and they have also struggled to find consistent performances from their young defenders such as Ronald Araujo and Samuel Umtiti.
Real Madrid, on the other hand, have shown that they can be a strong defense despite their youth. Their young players have shown promise, and they have also had some key signings such as David Alaba, who has helped to solidify their defense.
Another factor contributing to Real Madrid's success defensively is their tactical approach. They have a clear game plan and work together well as a unit, which allows them to defend better than most teams in the league.
In conclusion, while Barcelona has struggled defensively this season, Real Madrid has been the least conceded team in La Liga so far. While Barcelona will need to improve their defense if they want to compete for major titles, Real Madrid will continue to be a force to be reckoned with in the league.