Barcelona certainly won't waste this opportunity to play at home, it will certainly be an interesting match, because in the domestic league Napoli doesn't look good so Barcelona can take advantage of their current declining performance, Xavi must be able to take advantage of that by putting pressure on his players to being able to play optimally and win the match in the second leg, at least a narrow win is more than enough to qualify for the next round.
I am confident that Barcelona can qualify for the next round. It seems they will overcome Napoli at home of course with a different strategy, learning from the failure in the first leg where Barcelona was held to a draw by Napoli, it is clear that this is something that is not profitable, I think Xavi has prepared a strategy which is good for facing Napoli in the second leg match later, my prediction is that Barcelona will probably win 3 - 1 against Napoli in the second leg match later and they will succeed in qualifying for the next round because they are quite worthy of advancing compared to Napoli.
Barcelona is currently having issues but still they are having enough quality which will help them to defeat Napoli at home after having draw in away game in Italy where they were doing good but Osimhen goal bring Napoli to the level, but now things are completely under their control, and they are surely having good team which will give them good result and also chance for the having spot into last eight.
Xavi which is already announces about his departure from Barcelona at the end of this season trying his best for having good result and his team is already having good performance in last few games with Napoli is also not on positive change after having worst season, but now it's too late for them because most chances they are going to be ended on their poor run and having no chance for anything good at coming season if they are not going to settle their issues.