Solved
900 hours saving gone!!!
i created a new EA account to play sims4. And then i tried add my old save to the new game, since me old sims4 are still on my pc (my pc has two sims4 game and two EA account at the same time.) And t...
a858620b94f89df8 Saves need to be in Documents > Electronic Arts > The Sims 4. Please remove the saves folder from the Program Files folder. It can't be used there, and it may be deleted if you update or repair the game.
For the missing save, it looks like you only have backups, but you can try recovering one of them:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
