With Sevilla's condition still not having a good performance, it is quite natural that this match is a little difficult but when looking at some of Sevilla's playing records in the past season, especially when getting a much better opponent, they actually always try to play better and this could be surprising.
Even with their current performance, Sevilla will definitely have difficulties but I think they will be quite capable of reducing the dominance of Barcelona.
On the other hand, I agree with you, Sevilla can still come back at any time and it is possible that in this match they can do something different even though the probability of winning is very slim. I try to be optimistic that Sevilla also has players who don't give up easily.
Sevilla's chance to draw is already very good for them but they can also go further especially when seeing Barcelona lose last week it indicates that Barcelona still has a gap that can be penetrated even though it is very difficult.
Sevilla's performance is unpredictable sometimes they are very bad but sometimes they are also very good so in this case if Sevilla really want points and want to improve their current position then they must try to at least secure 1 point in this match.
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I think we shouldn't expect any surprises today - the Catalans will try to go forward to the opponent's goal from the first seconds. The team has a very powerful offensive line, which will allow Barcelona to realize their chances. "Sevilla" now is not a team that can cause problems to the leaders of La Liga. So I think the Catalans will get three points.
Sevilla has tough defender Sergio Ramos even though he is no longer young but his experience against the Catalan team is no longer in doubt, even though Sevilla got off to a bad start to the season but in my opinion they will definitely put up a fight against Barcelona, even though Sevilla are not the favorites but I am sure that Sevilla being able to get points from at least a draw is far more enough for Sevilla, but if luck is on Sevilla's side then that is a bonus.
But obviously, if we consider based on the odds available then it is clear, that Barcelona are really very favored in this match to win. But yes, because this match will also not be played at Camp Nou then maybe, with that factor maybe Sevilla will be able to play even better. Perhaps, Sevilla also needs a miracle factor in this match, because based on existing head to head records at least in the last five matches of their meeting the result is that Barcelona has good dominance. Therefore, although this will be a tough match then at least if Sevilla wants a win or draw result, then Sevilla will also expect a miracle to happen in this match.