Both clubs have some good young players, Yamal in Barcelona and Jude Bellingham in Real Madrid. They are playing so impressively in first three matches for their clubs but not sure they will continue their performances in rest of 2023 - 2024 season. Their appearances in La Liga and excellent performances so far are contributing to make La Liga more attractive after departures of two biggest stars in the two decades, Cristiano Ronaldo and Lionel Messi.
Well I don't know about Yamal, if he'll Contine to be impressive and have a better performance all through the season but I belive in Jude, he's been very impressive since last season at Dortmund if was his fine form that triggered Realmadrid to go for him, moreover he's has more experience in the Champions league than Yamal so I don't think it would be a big deal playing for Realmadrid in the Champions league, and I believe he'll continue with this form for a long while, except maybe he sustains and injury that would reduce this form, but asides that he's a talented player and has passion for the game, a player that would come into any team and make a difference, well the good thing is that both clubs has got young talented players that could turn out to being title holders in future but recreating the Ronaldo and Messi saga in Spain I think it would take a while for new stars like them to be born again.