Apart from that, Real Madrid is dominated by young players and perhaps only Luca Modric is one of the remaining senior players in the team. Yes, we'll see whether Luca Modric will stay with Real Madrid because currently discussions about the contract are still continuing and hopefully Real Madrid will give Luca Modric time for the next season.
Barcelona must be prepared because their current rivals will certainly have a strong squad for next season, while Barcelona still has the same problems every season. If they can't improve it then Real Madrid will easily become champions again next season, so Barcelona must be prepared for that.
Xavi Hernandez was fired because he was deemed unable to provide what management wanted. Now they have a new coach, Hansi Flick. It is hoped that he can build Barcelona and perform better than this season. Honestly, I can't say that Hansi Flick will make Barcelona better, because he has work that must be done one by one to make Barcelona even better. And personally it will be very difficult because Barcelona might not be able to provide all the needs he asks for, one of which is when he asks for players at a high price, because Barcelona's financial situation is not good.