A lot of person just watch football for the entertainment, they don’t understand the game logically. Anyone who criticizes Ronaldo anytime Al Nassr fail to impress or win a game does not understand that football is a team sport and the team lost because the team was not good enough on the day or the team was lacking in some areas of the pitch. Ronaldo has always given his best each match day for the team.
Exactly the point, those who criticize him must lack football knowledge else they wouldn't do that. Sometimes it might just be as a result of hatred they have for him. Al Nassr has a weak defense and you don't expect Ronaldo to do the work of the defenders but lack of football knowledge blinds them from seeing and understanding this.
It is undeniable that some people criticize Ronaldo not because of his appearance, but they basically don't like Ronaldo, so it's just a subjective assessment.
I also sometimes criticize him, but I criticize him based on clear reasons, if his game is not good for example, or his attitude that should not be shown. But I am objective, if it's good, say it's good and if not then I will criticize him.
If the criticism is based on reason and not based on hatred then it is normal, because it is impossible for a player to be perfect without a mistake.