Their elimination from the Champions League was also really unlucky. Until the last minute, Barcelona was going to be the team that advanced to the next round, but at the last minute, Inter scored a goal as a result of their magnificent organization, sending the match to extra time, and another goal scored by Inter in extra time brought the team the round. Barcelona finished last year magnificently. They won all the matches they played against their biggest rival Real Madrid by big margins.
There is no way to say that Barcelona played badly against Inter Milan in the Champions League match. Barcelona performed well in both matches and were able to dominate to some extent. However, Inter Milan was lucky. They were able to secure the victory until the end. Barcelona lost due to the poor performance of Barcelona's defense and goalkeeper.
Barcelona will want to win both the Champions League and La Liga titles next season. However, it is now more difficult for Barcelona. Because Real Madrid is trying to strengthen their squad. Dominating La Liga will not be easy for Barcelona this season. Also, the Champions League is always fiercely competitive.