Both Barcelona and Napoli are struggling, performance-wise. Their underperformance makes this match more uncertain.
I agree with you friend and i think you are missing out on a detail, yes Barcelona and Napoli are struggling, but Barcelona are worse off because they have more injuries and cannot score many goals, while Napoli has Osimhen back, fit and also amongst the goals!!
I think Napoli edges this, 2 goals to 1.
In the first match, it was Barcelona who got the advantage in Italy. The rematch will be in Spain, so I think Barcelona will be the team that will take the advantage. Napoli will have a difficult away game. The strengths of the two teams are very close to each other. That's why I can say that it will be a difficult match to predict. It will be such a match that both teams can win. Maybe it will go to penalties and the penalties will decide the team that will advance to the next round.
competing as hosts, Barcelona will take a lot of advantage, I agree with what you said. Because after all, clubs that play at their home base will benefit because they will get full support from their supporters and that will make their enthusiasm even greater because they want to present a victory for their supporters. But of course that doesn't mean they have a guarantee that they will win, they still have to put in the effort and hard work.
Napoli who will come as the visiting team will also want to get the best, so they will probably forget everything and focus more on their game at that time. Both clubs have to be very careful because once they make a mistake, they will be punished by being excluded from this season's Champions League.
Opportunities for both clubs are still open, it's just that Barcelona has a bigger opportunity than Napoli. And maybe they will achieve the same result again in normal time and have to continue the match in the penalty shootout round. And if that really happens then their chances will change to 50/50.