It's simple everyone supports the winning side

Barcelona plays exceptionally good but their problem is there're limited good finishers to bring In victory for them, injuries is killing the club slowly, pedri just recovered from an injury only (not completely) only for Frankie and Gavi to take on Injury,Balde almost had another injury but he was rested .
I hope the next coach will be able to manage the team, they play well but they need to change their strategies as its not working out so good on the club . Despite the injury season the team is still maintaining it position on the league.
Barcelona are not a bad side, they play good football but at the beginning of the season they were struggling and lost some points but they later got back on their feet and were still able to retain second place. They were facing injury challenges, some key players were out injured for some weeks players like Gavi, Pedri, De Jong, Aroujo and Balde all struggled with injuries this season and they were all important players that could have changed the story of the team this season. Sometimes things like this happens, it happened to Chelsea as well as other clubs too but the manager just have to manage the team the best possible way.
Parting ways with Xavi i don’t know if it was the best decision for the club but Xavi was never a bad coach i just hope they don’t regret their decision of replacing Xavi. I think if Xavi had more funds to sign more quality players they would have performed better than did.