Unfortunately, I'm also starting to have doubts about Atalanta. This team did very well last year, but they had a coach like Gasperini behind them, who we know knows how to do his job very well, he's great, and now Roma will reap the benefits, but we shouldn't think that it's finished as a team, they could still give us some surprises.
Everyone knew they wouldn't do great this season. What would you expect from a team that lost their decade long manager? It's normal for them to not be that great, it's nothing shocking and should be taking some time for them to get better. Atalanta will not have a good season, they will finish badly, I mean not bad enough that it would relegate, and go down, but bad enough that they may finish like 10th or 13th whatever, so unimportant places. In every league there are two important places, one is UEFA competitions level, so if you finish there you go to UCL or UEL or conference league, and the other important is relegation. Everything in the middle is unimportant places and that is the most obvious way for them to move.