Well as a striker you dont need much to score just to be in the right spot. The problem is that he is very old and that they might have some better options in attack. So far its 0-0 on halftime and Ronaldo didnt have a big chance but is playing so far a solid game and he might score if he plays the entire match
That being old is what brings in all the experiences, yes he can't run and do the tricks he used to do before right now because of his age but his experience gathered all through his career is what's keeping him going. Old players like Ronaldo knows exactly how to and where to position for the ball when his team gets to the opponent box, that's where the experience comes in. Even at his age, there are difficult chances that Ronaldo will convert that these younger strikers can't. Just watch how these old players positions for their goals.