The most difficult thing for Real Madrid will be the return leg of this match. If you can't score in a match like this, it will be very difficult for you in the return leg. Real Madrid has a really quality squad. However, Arsenal will have to make a lot of mistakes for this match to turn in their favor. If it is a normal game, Real Madrid may not be able to come back against Arsenal from now on. I am almost sure that Arsenal will advance. There is a 90% chance that Arsenal will advance.
Real Madrid has always been a club that are considered the favourites in this champions league competition. There are games that you can say they can come back from most especially if the return leg is played in their home. This is one of the reason why many people believe they can actually come back. We have seen clubs overturn a 3 goal deficit in the past so it is not impossible for it to happen but if we look at the metrics that which this things happen we will see that it is very hard to actually have it happen.
Arsenal has the best defense behind Inter Milan in Europe and Real Madrid with all their attacking force are seriously struggling to score goals as such coming back from a three goal down isn’t something that I see easily happening. More so Should Madrid players go out in search of goal then we might have to see them having get exposed at the back and that will be very bad for them.
Right now I think Real Madrid Should first focus on this weekend match before anything so they don’t lose ground on the Laliga more