It is true that Real Madrid signed Mbappe to improve their attacking line. In fact, Mbappe make the attacking line be worse. With the absence of Vini and Rodrygo, Ancelotti must feel big impacts. Mbappe couldn't play well although he is positioned as a left winger. It is clear that Mbappe's performance is very much declining since he joined Real Madrid. I don't know what Ancelotti can do with the current condition of Mbappe and many injured players of Real Madrid players, especially on the attacking line. Sure, Mbappe will stay in Real Madrid until the end of the season. However, if Mabppe never improves his performance, it is not impossible if Real Madrid finally decides to put him on the transfer plan. It is better to try signing a real CF like Viktor Gyökeres than keeping Mbappe for a more season.
Mabppe seems unable to adjust his playing style because until now he has found it so difficult to maintain his best performance to continue scoring goal, even last night's match when Real madrid faced Liverpool where Mbappe did not show his best quality. It is true that Vini's absence has a quite heavy impact on Real madrid because we know that Vini can put a lot of pressure on the opponent's defense if he is on the field.
Of course, Ancelotti must be able to adjust a better strategy when Vini and Rodrygo are absent because these two players are very influential in Real Madrid front line. But in La Liga, Real Madrid chances are quite large to reduce the points gap from Barcelona, and I am sure the competition between the two will be more interesting every week.