Fatestanynight animation plot problem

I only talk about my own understanding:

1. Finally, the Holy Grail was destroyed and saber and Shiro separated. Because saber no longer wants to go back to the past and not draw his sword (not to be king), Shiro also doesn't want saber to use the evil power of the Holy Grail to continue to exist. If he wants to say something, he should see each other again, which was realized in the last episode of the game.

2.saber always blames herself. Because the power of the Holy Grail stood firm before his death, he took part in the Holy Grail War at the expense of becoming a hero, and wanted to realize his desire to change history, that is, not to be a king (not to draw a sword in a stone). So she stood still until she won, and after the fourth war, she no longer wanted to realize this wish, so she returned to her own time. The story of returning the sword is a legend before King Arthur died in history. It is said that I had a long dream, which should mean that I spent a long time in the Holy Grail War. I hope to continue, perhaps because I hope to see Shiro again.

3. It was Emiya Kiritsugu who ordered Cybertron to destroy the Holy Grail by decree. The cause of the fire seems to be related to Kotomine Kirei. I haven't read the novel of Destiny Zero, so I'm not sure. I am watching the animation.

PS: The game of fate is good. I like the advice of fate. Play with it. You can find it in the post bar. I have a seed, but I am very old. I don't know if it's ok. Leave a mailbox if you want.