Actually his age is not a problem because he still has very good abilities on the field, it's just that his expensive salary is a barrier for clubs that want to recruit him, if his salary is not big I'm sure he is still being fought over by many big clubs and maybe he can still play in Europe again and have no difficulty going anywhere at this time he still wants to continue playing football but unfortunately many clubs object.
I thought after his contract at Al Nassr was over he would decide to retire but it turns out he has not thought about retiring.
He still has a strong physical and still enough to play in Europe, only his salary is quite problematic for the team who wants to recruit him. Now Ronaldo's target is to reach 1000 goals and maybe that's the reason not to decide to retire and still wish to play in Europe. No one knows for sure how his career is now because there might be a surprise that will happen and I just hope he can return to Europe because sometimes his presence in a crucial match can provide more interesting matches.