Napoli is suffering in every aspect during this season.They are not being able to show the quality they have in most likely because of internal problems at the team,the win against Braga was a bit lucky and of course was due to the fact that the difference of quality in leagues between Serie A and Primeira Liga are relevant and substantial.
Osimhen is not being able to show his skills and I don't know but I believe it is because of internal problems in the team,his treatment should have been better of course,nevertheless playing with Napoli in the Champions League can be a good window to show off his skills.
Napoli victory vs Braga in Champions League was the only victory they have from their last victory in August vs Sassuolo in Serie A.. Napoli have 8 points and scored 5 goals after 5 rounds.
In Champions League, their group isn't easy with Real Madrid getting a spot for sure and they have to pick the other one from Union Berlin which aren't good in their league too.
We were waiting a lot from Napoli this season but it seems they dropped in performance comparing to the previous one. Selling Osimehn and buying new players might be a good choice that was missed this summer.