I won't say Napoli are unlucky. I will say it is Napoli's failure. I am saying this because Napoli have focused only on Serie A this season. The team is not under pressure to perform in the Europa League or Champions League. Why would they perform so badly? Napoli played well enough in the match between Napoli and Genoa but failed to win. But did you watch the match between Napoli and Parma? Napoli's performance was very poor. And Napoli does not deserve to win by performing like that. Napoli's players managed to take only 7 shots in the entire match.
I can only agree with you
We can't say that Napoli did everything perfectly, they have to thank Inter's commitments.
Unfortunately, this is also needed: luck.