Al Nassr need to have a plan B. Ronaldo may play for them for one more season, and they need to find a replacement after that. Even now, Ronaldo is playing like a one man army, with Sadio Mané and Talisca not living up to the expectations. What will happen once Ronaldo retires? And the less we talk about their defense that better. Mid field is OK, since Marcelo Brozović is there. But defense is in poor condition and the team management should focus on getting some good international players for this sector.
It isn't like an one-man army or one-man team, Cristiano Ronaldo can be a biggest star player in Al-Nassr but he is very old now and remember that he got chances of scoring goals with support from his teammates. He didn't score more than 80 goals for Al-Nassr because he could play independently and did not need any support, key passes, assists from his teammates.
Mane, Talisca, Brozovic, Ontavio and other players supported Cristiano Ronaldo a lot in Al-Nassr but they need to combine together better in attacks and need more new better defenders, to win big titles. They can not win matches or titles with only Cristiano Ronaldo as this man can not carry this huge and heavy task.
Yes, if in the remainder of this season Al Nasr cannot change its bad performance, I am sure that Al Nasr will most likely fail to become champions of the Saudi Arabian League again. Because now we can see for ourselves that Al Nasr is increasingly falling behind Al Hilal. Even a team like Al Qadisiyah has now surpassed Al Nasr and has a difference of 2 points. So it is clear that Al Nasr currently does not have great potential to become champions. Even being able to finish in second place seemed a bit difficult for Al Nasr's.
They did not start this season for a runner-up position but now, they likely won't get it at this season ending. Both Al-Ittihad and Al-Hilal now have 40 points, and Al-Nassr won't be able to catch these strong opponents. A possible highest position for Al-Nassr in this season is a third position and nothing higher. They have to compete with Al-Qadasiyah for a third position in Saudi Professional League.