I wouldn't say that Barcelona's performance was good last season. Only Barcelona and Real Madrid compete for the La Liga title. Other groups lag far behind these two groups. However, Girona's excellent performance last season surprised us all.
However, Barcelona need a stronger squad if they want to dominate La Liga next season. Currently, if you compare the teams between Madrid and Barca, Barcelona will be far behind. I look forward to seeing what steps Flick takes to strengthen this team. Hansi Flick is a very experienced coach.
I can’t deny that Barcelona did not perform well last season. But the way you said it is like Barcelona performance was very poor, which is not, although I can’t argue that Girona did well in their matches until they faced a defeat from Real Madrid and their performance started declining, and from then Barcelona took the place, so to me, Barcelona performance was not that bad last season; they came to the top 2 of the table, which is not a bad result for them.
I think they just need to get new talented players that can give them what the team wants because some of the Barcelona players are weak and they need replacements before the next season kicks off; if not, they will face hard times in their squad.
I think, Barcelona's squad is still fairly good because after all, Barcelona also has senior players in the squad. Therefore, I believe Barcelona can still get good results even though they cannot afford to buy many expensive players in the transfer market later. But indeed, the right coach and management factors will also have a big impact on team performance but of course, it would be a shame if they continued to try to bring in players even though they basically still have financial problems. In this way, it will at least have a bad impact on the mood of the players as well and therefore, I hope that the new Barcelona coach will not follow his ego to buy players in numbers that make it more difficult for Barcelona to manage its finances.