Source

Scenario I :
Real Madrid were playing against CSKA Moscow in December 2018. Real Madrid was defeated after allowing three goals to be scored against them in the match. The loss hit the supporters of Real Madrid particularly hard. As a result, it is not at all surprising that they will display signs of frustration during the match. But hold on a second. Their anger was not directed at all of the people there. Isco was the only one for whom that anger was intended. In the meantime, these are the supporters who have shown their appreciation for Isco's performances in the past by giving him the nickname "Isco Disco." But during that specific match, they began to boo Isco, and at some point during the match, Isco asked the crowd why they were booing him.

Scenario II : Carlo Ancelotti made a substitution during Real Madrid's match against Getafe in April 2022. Gareth Bale came in for Karim Benzema at some point of the match. Gareth Bale was the target of the jeers of the Real Madrid fans at this precise moment. After what seemed like an eternity(two years), he finally made his appearance. Because of his injury and the time he spent away on loan, he had to wait an excessive amount of time before returning to play for Real Madrid. In addition, sustaining an injury due to a fall is surprisingly common in the sport of football. That is not entirely the fault of someone else. I witnessed how an injury completely derailed Jack Wilshere's career. So why did the fans boo Bale?

Real Madrid supporters also jeered at Cristiano Ronaldo, a club legend who gave almost everything for Real Madrid. If I say that each and every Real Madrid supporter jeered at them, it might sound very harsh. But certainly not everyone. Perhaps a marginal portion of them. But these are the spectators who watch the game from the stands, and everyone listens to every boo or whistle they make. Therefore, it can be said that they speak for the majority of the supporters out there. It is not only about Real Madrid, Isco, or Bale in this situation. It's all about the fans and the football game. Football players at the professional level are not mindless robots. They are human, which means that it is quite likely that they will be performing below their normal standards or that they will be forced to miss some of the game due to injury. However, they should not be jeered at any point during the game or throughout their career due to the fact that they are injured or performing poorly.

There is only one game that can adequately explain what Isco and Gareth Bale did for Real Madrid. In the 2013–2014 campaign, this match was the final of the Copa del Ray. I have added the the streaming link in case you missed the game. I have a good feeling about the fact that you are going to love the way Isco and Bale played that game. In addition, Bale's goals were among the wonder goals scored in this decade.
Copa Del Ray Final,2013-14 Streaming Link

What goes around comes around
Because the same fans who booed or jeered at Isco or Bale were also the same fans who chanted the names of Mbappe. At this point, each and every Real Madrid fan desired to acquire him during this transfer window. What I can tell is that he is not going to show up. Who knows, but he might come during the next window. Or perhaps there is a chance that he will reconsider his decision tomorrow night who knows. However, some of the Real Madrid supporters need to realize that learn that nothing excessive is good. It is inappropriate to boo a legend from your own club while fans are chanting the name of a player from the opposing club.