I think both Endrick and Arda Güler should leave the team on loan. Because they don't get any chances at Real Madrid. Even when Real Madrid is about to win a match very easily, Ancelotti doesn't want to put them in the game. I don't understand what he wants to do. In a match where Real Madrid is leading by 4 goals, these young players should come on as substitutes and get some playing time. However, Ancelotti doesn't do this and he also wants reporters not to ask questions about this. I think the manager has a negative attitude towards young players. There is no other explanation for this.
You can't satisfy everyone. It's easier to comment about this, but if you are given to be a coach, that's when you realize how hard it is. Coaches usually try to look for the best working player combination and try to give them as much play time as possible. Real Madrid's attack and midfield are so packed. If you give more play time to youngsters, the older players will start complaining. Already people could talk how Rodygo would not get enough playtime a few months back.
The Youngsters will surely have their chance when the time comes. Remember, there is also a factor of injuries.