You forgot to insert the previous frame.
At this moment in time the defender has not touched CR7. He is also going down no matter what . It doesn't matter if the defender touches him.
Yet he is already falling and that is why he doesn't get anything .
It's because he has already decided to fall instead of trying to play the ball.
He could have continued the play if he wanted to or at least go for the ball. Instead he tried to force a penalty and the referre didn't want to give it to him.
His position after he stopped the ball is unnatural.