Ronaldo has already said that he believes that 40 years is a good age to retire. I think that this can be regarded as a direct confirmation that he will not end his career earlier.
As for his possible coaching career, I'm not sure about that. He is too ambitious and demanding of himself - if he makes at least 20% of such demands on ordinary players, then this will lead to nothing but conflicts.
Ronaldo is currently in a fairly disappointed condition after failing to bring Portugal to win the world cup, as an ambitious player of course he still has the urge to be able to get a national trophy (world cup) before he retires but for now it seems that the dream has ended, he is getting old old of course will affect his performance and physique a lot so I'm thinking maybe he'll only play 1 or 2 more seasons before he retires, Ronaldo and Zlatan of course we can't equate the two because of course everyone has different physical endurance and I think It's hard to see Ronaldo playing until he's 40 or beyond the way Zlatan did.
I think that despite all the big words about the World Cup, everyone understands that this is not a tournament that is important in terms of individual achievements - if in doubt, ask Haaland

Becoming a world champion is like a lottery - you can win, but unlike other achievements, there is little that depends on you because football is a team game and you do not choose which country to be born in.