I agree with you, that Al Nassr's defeat in this match did not happen easily, because they had to lose through the penalty shootout round, which is actually a round of luck in my opinion. If they fail to win any title this season, they have to admit that Al Hilal is indeed better than them this season.
A disappointing season for Ronaldo, because no matter how hard he tries, he can't get what he wants this season. His ambition to win a title is very high, so it's natural for him to cry because he has to accept the fact that he really failed this season.
Indeed, even before the match started, Al Hilal believed they would be able to win, because in the last few meetings this season, they were almost always ahead of Al Nassr. And they proved it again in this match where they beat AL Nassr again. Even though they struggled a lot, they managed to become champions again.
I believe next season will be different and we might see a lot of transfers especially in the Al-Nassr squad to improve the team, especially the defence line where we can see easily the difference between it and Al-Hilal. The number of received goals is almost twice as higher in the Al-Nassr side.
Cristiano Ronaldo hope were big in the beginning of the season and the team was lucky to find the second place again and finish behind Al-Hilal.
You are right they needed few changes, but these are only in defense as things are not favorable for them here, and they are facing problems which are needed to be fixed before next season if they want to win trophies even I have strong feeling things could be not easy for them to compete with Al Hilal which is having good team, and they are surely going to be stayed out of the transfer window as things are competitive for them, but we are going for the few changes into Al Ahli and Al Ittihad as well with both are needed improvement and Al Nassr which is also having problem with coach if they will bring any better than it's could be bonus for them and their success.