Barcelona managed to make the fans present at the stadium smile broadly because they managed to make changes to the game for the better and succeeded in securing the step to advance to the next round. In my opinion, Napoli have experienced quite a rapid decline in their performance, both in terms of defense and attack, where Napoli no longer have an accurate balance in their game.
So for Barcelona they have shown their focus on the Champions League where they are no longer focused on LaLiga after being far behind Real Madrid. Apart from that, Xavi has information circulating that he will still leave Barcelona even though Barcelona can reach the final of the Champions League this season.
Napoli could not be saved from decline even though they had changed managers several times, in the end they were eliminated by Barcelona who played more effectively even though they were not dominant in possession of the ball. Regarding Xavi, perhaps his decision is final, he feels it is time to leave after this challenging season. Apart from that, Xavi is a genius coach, he can make Barcelona, which is experiencing a series of difficulties, still appear stable and not fall as far as Napoli.