This season will feel different compared to the previous few seasons, this is the first time the Champions League will no longer have the names Messi and Ronaldo after the rivalry between the two occurred in recent years. New rivals are starting to emerge like Haaland and Mbappe. Last season Haaland was much better than Mbappe because he managed to win the Champions League and at the same time contributed greatly to Manchester City success in winning the treble winner. I think the rivalry between Haaland and Mbappe will be one-sided as long as Mbappe is still at PSG, Mbappe must move to a club that can provide competition in the Champions League to liven up the rivalry between the two.
Yes, it doesn't feel like time has passed so quickly and we no longer see Messi and Ronaldo performances in this competition. A regeneration has started between Halaand and Mbappe to fight for the best in the world, the Champions League is a good place to show who is the best between the two.
However, I think the two between Halaand and Mbappe are not at the level of Messi and Ronaldo for now, because we need at least the next three to five years to see consistent performances from Haaland and Mbappe. Messi and Ronaldo have gone through more than a decade of demonstrating their skills and consistent performance at both club and country level.