The current situation is very confusing. On one hand, Real Madrid needs a number 9 but they are performing well without them. On other hand, despite these rumors, I don't think Real Madrid would sign Mbappe after he kind of betrayed Real Madrid a few years ago and signed a deal with PSG. Everyone was thinking that Real Madrid got him but he said otherwise. It makes everything confusing.
Real Madrid are doing well without a number 9 right now. Joselu is doing kind of good but he is not a world class player after all. The rumors are not strong either about Mbappe coming to Real Madrid. Endrick Felipe won't be coming this season as far as I know. Things are getting very interesting and I will be watching every moment of it.
Although Real Madrid still could perform well with no quality pure striker but I think it is still very important to sign a quality striker. They may could perform well in the first half of the season, but who knows if the same tactics won't work well in the second half. They also can improve the productivity in goals if they have a quality striker. Well, Mbappe is a perfect striker for Real Madrid. Sadly, it is quite complicated to sign him, there is too many drama with Mabppe and PSG.