hollowdaydream It looks like your saves are intact, so the next question is whether they're in the folder Sims 4 is actually reading. Here's how to find it:
https://sims4.crinrict.com/eng/2018/07/how-to-find-your-user-folder/
Right-click one of your saves and select Properties > General, then compare the Location to what you see in-game. If they don't match exactly, up to "The Sims 4," then that's the issue.
If the saves are in the correct location, try manually recovering one of the backups:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
