Portugal have many young talented player but they not brave give them chance get regular position and prefer keep hold on with Cristiano Ronaldo
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That is definitely not true. You are claiming that Ronaldo is the reason why these players are not getting chances. It is the other way around. During Qatar 2022, the Portuguese coach (Fernando Santos) humiliated Ronaldo by not including him in the starting XI. The younger players performed well during the first match (against Switzerland, which they won by a massive margin of 6-1). But the tactic failed against Morocco during the Quarter-finals, and they lost the match 1-0. The younger players first need to perform consistently, before they talk about replacing Ronaldo.
That's true but you may not believe it, since there are many old players like Ronaldo playing for their national team there is less chance for younger players to have a chance. However, currently, Ronaldo can't show any good performance, and even yesterday in his Abarian team the fans were unhappy, the reason why we usually talk about Ronaldo and other old players is just because of their reputation they have not their performance anymore.
Obviously experience comes with age how can you expect younger players to come at level of Ronaldo, he is the king and he'll ever be because of his experience age and game .
No one can replace him for a long time in football world but yes many good footballers came into light during fifa world cup and In next world cup they'll be polished more and they'll show more good performances.