Though I'm not a fan of Premier league that much but I could see some change In Liverpool at the moment and the fact they've won 3 games consecutive is a good sign of change besides that also placed them at the second position on the table...
This is surely a good specu. for Atalanta vs Liverpool,though UCL might be different but I don't think Atalanta can win Liverpool with their current stats but nevertheless, I expect a good game from both sides

Yes there are some changes made by Liverpool management both in terms of finding coaches and looking for the players needed. But to see the appropriateness of playing in the Champions League may not be easy because of speaking competition that is quite competitive. Three matches with full points are a good step for the new coach and the last they managed to beat Man United with a promising score. If Liverpool succeeded in maintaining consistency as it is now then most likely they will be stronger.
Atalanta is not so strong when viewed from the quality of the players they have so that Liverpool should be much easier to get full points. But even so Atalanta cannot be underestimated because they could again give a surprise that is not predicted by anyone.