So, Al Nassr's management needs to see PSG's case as a great concrete example that the most important thing in a team is the coach. If they hire an inexperienced coach or one who has only achieved success in one league, they won't be able to handle Al Nassr well and, as a consequence, they won't be able to achieve anything great.
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.