But I think Barcelona was lucky during this season of the Champions League because we know they are not in their best form and this Barcelona we currently see can definitely lose games easily against other teams. While Barcelona is also not in the form to face with stronger teams, however Napoli has players like Osimhen as you just said and since Barcelona's defenders are weak this can be dangerous.
Barcelona wasn't in their good form, but it's a big joke if they're lose against Shakhtar Donetsk and Royal Antwerp because both of them are in different level. If Manchester United was in this group, I believe Manchester United will able to qualify for knockout stage.
Either Barcelona or Napoli win the match, their next match is against Arsenal which I think they would lose.
Many members of the squad are failing to meet expectations this season and it has harmed the chances of the club including the UCL. The defense is the one that suffers the most. All clubs that are matched with Barcelona can score goals.
It was a big joke when Barcelona lost to Shakhtar Donetsk and Royal Antwerp. Anyhow, it further demonstrated how disarray Barcelona is when the only winless club in La Liga caused a stir and almost pulled off an upset, but ultimately lost by 3-2. Napoli renewed its services with Osimhen, the club is also facing its own problems, but this match is almost even.
Defense will be the most important concern for Barcelona in the Champions League this season and before the last 16 match begins, they must improve to strengthen their defense. Barcelona often concede goals and we can't really blame them because there are times when big teams experience a decline in performance. We also have to take into account other important factors, such as players who are injured, and if I'm not mistaken, in that match Ter Stegen was still absent due to a back injury and his position was still filled by the second tier goalkeeper, Inaki Pena. In the domestic league, there is almost no difference because Barcelona often lose points and here Ter Stegen's absence is really felt by the goalkeeper line. But it seems that before the last 16 match starts, Ter Stegen will definitely recover and be able to guard Barcelona's goal again so that they don't concede easily.