Barcelona were more at the middle, not too good performance but also not bad for a team with young players who are still in the beginning of building their carrier except for Lewandowski who already knows more about the game. Barcelona players needs a lot of game time to be able to understand the game better, this coming season might be something different to watch. Last season there was no competition for the La Liga, checking the points difference between Madrid and Barcelona is too wide, which makes Barcelona performance look poor.
Next season, Real Madrid will also have a more fierce and fierce squad, so this will also prevent Barcelona from challenging for the title in La Liga again. Even though the facts you say don't rule out the possibility that Barcelona will be much better than this season. Because apart from there being still many young players in Barcelona, the team will also be trained by a new coach who may have new methods that will be implemented in the Barcelona squad later.
It is nearly hard for Barcelona to compete against Real Madrid after madrid made the gap being even bigger to the barcelona. I think Madrid's choice to add Mbappe to the squad was the best decision they made in order to own La Liga and the UCL for several seasons. It appears like Real Madrid will completely dominate La Liga next season. Barcelona is now heading back to zero.
Hansi Flick has a totally different approach to coaching the club. Xavi was extremely similar to how Guardiola treated Barcelona, but Hansi Flick is very different. This will force all Barcelona players to obey his orders and cooperate with his entire scheme.
This is why I believe Barcelona is starting from scratch again after Xavi has gradually built the clubs with available players. The arrival of hansi flick in the squad is also causing nightmares for some players, including Fernando Torres.
It has been claimed that Ferran Torres may be added to the list of players to be sold by Barcelona. Laporta is just resetting his club from hero to zero by hiring a new coach and firing the old ones.
I don't see Laporta as the fundamental problem in Barcelona.