In the recent season, Barcelona has experienced three defeats in a row which have left the Catalan team struggling with their defensive issues. This is not a situation that should be overlooked and requires immediate attention from the coaching staff.

The first issue that needs to be addressed is the lack of stability within the defense. The team has struggled to maintain a consistent rhythm in its defensive play, leading to several costly errors. This has resulted in several goals being scored by opponents, particularly when Barcelona is playing under pressure or without possession.

Another problem is the high level of physicality on the pitch, which can cause players to lose concentration and make mistakes. This has led to numerous off-the-ball incidents and has negatively impacted the team's performance.

To address these issues, it is essential to refine the defensive setup. The coaching staff should focus on developing a more disciplined and organized defensive strategy, including the use of advanced tactics such as stretching the midfield and creating space for passing.

Additionally, improving the team's fitness levels is crucial. With injuries and fatigue taking a toll on the team's performance, there is a need to ensure that the squad is well-rested and ready to perform at their best.

Lastly, the coaching staff must also work on communication between the defense and the midfield. A lack of clear communication can lead to poor decision-making and mistakes made by the team.

In conclusion, while the defensive issues faced by Barcelona may seem daunting, they are not insurmountable. By addressing them promptly and working towards a more stable and disciplined defensive setup, the club can regain control over its game and improve its chances of success.