In fact, both of them didn't play very well, Napoli and Barcelona didn't seem to finish their match as expected.
Napoli in the home match was unable to win and Barcelona, which was clearly team with much better performance than Napoli, could only survive draw.
Last season we could see Barcelona performing very well but now they have to face quite difficult conditions to become strong team.
I agree with you that Barcelona has defense that is not very good and in every match Barcelona always concedes goals from the opposing team.
What do you mean, it's not as expected? I mean both teams have had some lackluster rallies this season and a draw is probably a very fair result for both teams. Apart from that, the second leg will be more interesting because Napoli status as a visiting team means they have to perform better if they want to win. Teams from Serie A often provide obstacles to teams from Laliga representatives so it is not surprising that the second leg match will be full of surprises. Indeed, Napoli is not very strong this season, but if Osimhen is again wild in scoring goals, it is possible that Barcelona will fall in the round of 16.
I still support Barcelona to win the second leg but because their performance is less stable, I doubt they will be able to finish the second leg easily. Lewandowksi is our hope because he is one of the players who is full of experience in the Champions League and I hope he can find his sharpness to score goals and give us victory.