Yes, Real Madrid are going through a lot of ups and downs at the moment, due to which they lost their first match where they did not score a goal. The team is still very uncertain because of that, but they have many records in their past to come back. If Real Madrid can come back in their match against Arsenal today, it will be a huge comeback that all Madrid fans are waiting to see. If Real Madrid can come back from this situation, then only they can enter the semi-finals, and if their luck is not on their side, then there is a possibility of losing.
If Arsenal beat Real Madrid by a huge margin of 3-0 at home, then why can't Real Madrid, even though they are a stronger team than Arsenal, beat Arsenal by a huge margin of 4-0 at home or come back in this match? I have a lot of faith in Real Madrid and I still believe that Real Madrid will come back in this match. Today's match between Real Madrid vs Arsenal is not to be missed because we will definitely see a very tough fight in this match. Real Madrid only has to play this target, in any way, their goal difference should be 3-0 in 90 minutes. If Real Madrid can do this, then you can be sure that Real Madrid will ensure the semi-finals, but for Real Madrid, the challenge of overcoming the first hurdle is definitely a big challenge.
Even though Real Madrid are playing at home today, they will have to score 3 more goals than Arsenal to come back with a point. This is a very difficult channel for them. You can't always do something magical by playing at home. So there is a high possibility that Real Madrid will have to leave the Champions League today. Arsenal are not going to finish the match 0 goals down so they can score there too. So unless Real Madrid can pull off something magical today they will be eliminated from the Champions League.
Note - There is a separate specific topic for the Champions League so it is better to discuss about Champions League there. Of course, it is important to keep in mind that this topic is for La Liga.