Al Nassr already has good quality attackers. I think they only need to focus on building their defense. The midfield line is also needed a big improvement if they want to compete with Al Hilal. Just look at Al Hilal, they only got 23 conceded goals during the season of 2023-2024. Meanwhile Al Nassr got 42 conceded goals. Considering the number of conceded goals, we can clearly know the difference of Al Hilal defense quality and Al Nassr defense quality. 
It is true that Al-Nassr's weakness lies in their defense which is quite poor. When their attack line manages to score lots of goals, it will be useless if the back line also keeps conceding the ball. Al-Nassr is very productive and is the second team as the top scorer in the SPL. 1 goal different from Al-hilal who scored 101 goals this season. Meanwhile, Al-Nassr scored 100 goals. So it is time for Al-nassr to focus more on hunting for defenders and midfielders who can cover their weaknesses. Last season, Al-Nassr managed to get a wing defender from Man United, namely Alex Telles. But that's not enough. And I think in this transfer market Al-Nassr will have to hunt for defenders again if they want to appear more balanced next season. For the front line, I think that's enough.