Last season Liverpool lost their balance towards the end of the season, and it was right around the time they were going to face Atalanta. If I remember correctly, before they faced Atalanta they also experienced a decline in performance and even that continued until they also lost their position in the competition for the Premier League title. At first they were quite promising, but we never know what a team will experience, and that's what Liverpool experienced last season, right towards the end of the season. Atalanta is a team that has a chance, but when compared to Liverpool, their chances are actually not greater than what Liverpool has. But that's football, sometimes superiority on paper is not a guarantee for a team.
If you look even more broadly, let alone Liverpool who have good potential at the beginning of last season in the Europa League which is very convincing can lose when dealing with Atalanta, Bayer Leverkusen only has a very good victory and in the gadang-gadang will be the winning of the Europa League can lose By Atalanta, basically indeed Atalanta has an extraordinary ability to get a victory last season, it has become the time for them to get the Europa League, but many of us seem not to accept that the winners are Atalanta, it is because they are not famous but can silence other teams .
So true, anything can happen to an underdog team can rise up certain teams, and the consistency of ingenuity is very expensive.
Atalanta is not an unknown team, they are one of the teams that can be counted on in Serie A, it's just that they haven't been able to fully put more pressure on Serie A. Maybe if their similarities when looking at teams from other leagues Tottenham can be an illustration of how they can play, yes they can compete but they haven't been able to compete even better.
People just didn't expect that they would be the ones who could become champions in the Europa League when they had to face 2 more favored teams, such as Liverpool and Leverkusen. This is actually a very common thing in football, a team that is not more favored does not rule out the possibility that they will be able to give a surprise.