If not for the arrival of Mbappe, Vinicius was the best player in Real Madrid that you can count on whenever Madrid needs a win in any match. You should see how important and good he is at his to the extent that Ancelotti have to convert Mbappe into a central forward instead, of allowing Mbappe play to play on Vini's wing. Vini will not be sold because the club needs him more than the Arab men.
but this must not be an excuse, vinicius jr must demonstrate that in any case, he is the best for him and for the team, before the arrival of mbappe he managed to have impressive numbers but then he had a drastic decline, but more than him as a single player I think it is a problem for the whole team
You're right, it's a problem with the whole team individual quality alone can't make the difference. Vini is a great player, but every player eventually loses the form they once had. Xabi Alonso knows what he’s doing , he’ll prepare Real Madrid mentally first for the upcoming season, and then physically. We’ll see a better version of Real Madrid, or at least i hope so.
You can prepare them mentally, but that won't make up for huge differences in quality. When you take FC Barcelona from the goalkeeper to the striker, many of the players play very well together, help each other out and are without exaggerated selfishness. Raphinha + Lewandwoski + Yamal is great because they vary in speed, in finishing quality and in style. Real Madrid has two of the same players more or less with Mbappe being better than Vinicius. If you compare the two teams position by position, I think FC Barcelona is ahead and are again the favourite for the La Liga title. Real Madrid will be the challenger, but I think there chance to win that title is maybe 25%.