I think that this time we will not see such a surprise and the fact that Liverpool lost against Atalanta is because they did not took the adversary that seriously and when they wanted to change things in the return leg they simply could not. Now the team of Liverpool is much different compared to last season and I think they will go far in Champions League and maybe even in final as this team is showing awesome performance so far.
Liverpool showed outstanding performance in their domestic league. It raises optimism from many footballers to believe they will be going very far in the UCL. They can compete for the UCL title. They have a strong attack, defense, and midfield. And a good coach who can analyze the situation calmly.
But the thing that you must realize is that they're performing at the UCL. They have nothing to do in the Europa League. They won't come here to pay for their mistake last season cuz everything changes now. Read the new rules in the new format below.
If it happens that they come in Europa League I am sure they are going to win it this time.
They won't come to the Europa League. The better for you to read how the new format is working first. If they failed on UCL, they won't be dropped to Europa League.