You are of course right, Liverpool could lose against Atalanta but I think Liverpool are the favourites. Atalanta has a fairly productive attack line and so far they have proven their abilities by scoring 12 goals in the group stage and 3 goals in the round of 16. Liverpool have to be aware of the possibility of defeat, that's can make them fail to win a semifinal ticket. So it is not certain which of the two they will qualify for the semifinals.
Liverpool have 3 matches in the Premier League before the Europa League quarter-final match against Atalanta, so maybe this could also affect the team in the Europa League, especially if several players get injured before the match. I'm support Liverpool to win that ticket, but not underestimating Atalanta.
Although atlanta has the potential to trouble Liverpool and be able to beat Liverpool. but I think Liverpool will have no significant obstacles and can easily advance to the semifinals.
Correct. As the favorite team to win the Europa League this season, Liverpool is indeed superior to Atalanta because in terms of player quality, Liverpool is much better than Atalanta. However, Liverpool still have to be careful and not underestimate Atalanta, who is considered unable to make things difficult for Liverpool.
The reason is that if you look at history, Atalanta once beat Liverpool 2-0 at Anfield in the UCL League event even though afterwards they lost heavily 0-5 at home. This indirectly proves that Atalanta could potentially cause a surprise in the current match, especially in its attack line which could be said to be a surprise for the opponent's defense.