Scoring the first goal thanks to 20-year-old Fermin Lopez, Barcelona used this advantage very well. After Lewandowski's last goal, Napoli's hopes were already over. It was good for Barcelona to pass the round, but who they will match with in the next round will be important for the UCL. Barcelona may rotate in the league for those 2 matches.
At least the victory against Napoli proves that Barcelona still has the enthusiasm to play and is capable of fighting a team as strong as Napoli. Fortunately, Robert Lewandowski managed to score the final goal in the 83rd minute which meant that Napoli could no longer chase victory because the points were too far away. In La Liga, Barcelona still has the potential to take first place by getting three wins in the upcoming matches.
Barcelona clearly doesn't want their struggle to end here, they want to prove that their potential is still good to beat Napoli. As we know, Napoli is currently in an unstable condition in the league, so it provides a good opportunity for Barcelona. Whatever Barcelona does this time makes its fans very happy because it has given them confidence that Barcelona is still a strong team even though they are struggling. I think in La Liga I doubt that Barcelona could be in first place by only winning 3 matches if it wasn't accompanied by Madrid's defeat because Barcelona is already quite far behind.