In the case of Al-Nassr, a good coach could fix things well especially that they have enough funds to recruit quality players. I said quality players and not top players because names mean nothing nowadays. Whenever I see PSG success in UEFA Conference League and in the other competitions, I say a good strategy and teamwork are the key to success. Al-Nassr lacks seriously these two points.
On this point, I completely agree with you. It's undeniable that Al Nasr currently lacks quality players, especially in defense. Speaking of their attack, I'm personally quite optimistic that with the current players, Al Nasr will remain sharp. They have Ronaldo and Mane, who are certainly key players. Meanwhile, Al Nasr's defense is truly weak at the moment. So, as you said, a great coach is needed to improve Al Nasr's defense. To date, Al Nasr has had two different coaches, but the result remains the same a poor defense. Therefore, Al Nasr must have an experienced and intelligent coach.
So, Al Nasr shouldn't overemphasize their attack to the point that they forget that their defense is very poor. From my observations, Al Nasr's coach overemphasizes their attack, which is already quite good. Therefore, Al Nasr currently needs to bring in a defender with excellent qualities who can collaborate well with the rest of the squad. As we know, even though Al Nasr has brought in top defenders from Europe, the results have been less than satisfactory. Therefore, Al Nasr shouldn't focus solely on bringing in European players they should prioritize quality, regardless of where they come from.