Ronaldo and Messi have both been very influential players for their national teams.
Ronaldo, who is a Portuguese national player, is one of the mainstay players for the attack line and vice versa, Messi for Argentina is also a core player in the attack line.
But both of them had their heyday at almost the same time to become players who were really very competitive.
It's just that it happened in the past when both of them still had the stamina and performance to play well.

Now, due to the age factor, maybe the way of playing has changed drastically, only luck distinguishes it, where Ronaldo was trusted to be brought in by the Saudi team with a very large contract, while Messi is still the subject of discussion.