The part that you said Real Madrid needs more player I really don't think so they have enough player and good once at that, the strikers that Real Madrid has are very good strikers all Xabi Alonso needs to do right now is to make good use of those players, if he can make good of this players that are in Real Madrid currently I'm sure they will lift the champions League in next season.
Let's just hold on and see what next season will look like for Real Madrid however for me I believe next season will be better than last season for them.
They need to buy players because as you may know Vinicius and Los Blancos have been having a difficult time recently, they have sold Ronaldo before, so it seems that they might not overestimate the Brazilian player because he is still not more valuable than Ronaldo.But perhaps many are still privately confident that this player will remain in the Spanish league because no one is better than his winger and he is approaching every match with confidence. You are right that they need to use the priceless gems they currently have properly. We haven't seen them participate in any pre-season friendly matches since the Club World Cup semi-final, so it's not yet clear how structured they are for next season, perhaps this newly appointed manager is now responsible for implementing and improving the positional system.