Last season Sevilla managed to get the Europa Cup trophy but this season there are no big hopes for Sevilla in the Champions League, plus they are in group B which is filled by Arsenal, PSV Eindhoven and Lens and the tough opponents for Sevilla are Arsenal and Lens because these two teams also have strengths that can be said to be very frightening by providing unexpected surprises in every match.
I'm not sure Sevilla will qualify for the round of 16.
PSV Eindhoven is also a fairly strong team in Group B so Sevilla must be able to achieve more wins if they want to qualify for the round of 16. Although I myself also think that it will be very difficult for Sevilla to qualify for that round because the other three teams in the same group as Sevilla are teams that have the strength to compete for the next round. Personally, I am more sure that Arsenal and PSV Eindhoven will qualify for the last 16 for teams in grub B.
For now I have to agree with your statement, it will be difficult for Sevilla to qualify for the last 16. Joining Group B with Arsenal, Lens and PSV will make Sevilla have to work hard, Sergio Ramos experience in this competition is really needed even though the veteran defender is no longer young.
Arsenal are favorites to win the group, Sevilla automatically has to compete fiercely to fill the runner up position. PSV and Lens certainly want that position, hoping that Ramos can boost Sevilla to compete in Group B.