Real Madrid will have to be even stronger in this match against Atalanta because Atalanta is currently in good form. Atalanta is an undefeated team in the Champions League so far, so this team will definitely work even harder to defeat Real Madrid. Since Real Madrid has lost their defender due to injury, it can be a big pity for Real Madrid, but if they want to stop the attack of their opponent, they must fill this space. If Vinicius and Rodrigo continue on the field, there will be a lot of hope of scoring goals, but if they want to stop Atalanta's attack, Real Madrid must keep their defenders. This is an important match for Real Madrid because they are already far down the points table, having won only two matches out of their five matches and losing three matches. Accordingly, Real Madrid will have to be tough against Atalanta in this match and every player will have to play hard, otherwise it will not be so easy to win against Atalanta.
To be fair Real Madrid has better squad than any team in the world if you ask me, maybe with some missing players things are a bit different, but when fully healthy, they have the best squad in the world. However, things do not work out that way all the time, they have some injured players and they have some problems and all of these end up being a problem for them that is getting worse for them.
Hence, I do not think that it is going to be that easy for Real Madrid to win. I get that Atalanta is a great team, and I do think that in any other situation Atalanta would have probably won, but this time it's a bit different, Real Madrid is literally risking to lose out on top 24 position if they lose, even a tie would risk it, so they have to win. There is no scenario where Real Madrid would be ok with being out of top 24, it's already shocking for them that they are not in top 8, but that's already guaranteed, so they have to be in top 24, and to do that, they have to beat Atalanta.