@ZeebiaLPS
I'm sorry you're missing your saved games. Maybe they've been moved or saved to OneDrive?
Sims 4 and OneDrive do not work well together. Due to the game not recognizing saved games saved to One Drive. To get saves to be recognized they need to be in the game's save folder. - \Documents\Electronic Arts\The Sims 4\saves
You should be able to move the saves files from OneDrive to Sims 4\saves without to many issues.
It's highly recommended to disable Onedrive for Sims 4, due to it not working well with the game.
How To: Turn off, disable, or uninstall OneDrive
https://support.office.com/en-us/article/turn-off-disable-or-uninstall-onedrive-f32a17ce-3336-40fe-9c38-6efb09f944b0
If you still can't find where your saves are located, you may need to search your computer to find where your documents or Sims 4 user files are located. To do this, click the Start button and in the search bar type in Sims 4 and follow the path that it shows you.
If you're not able to find them through searching the computer or on OneDrive, you might try contacting a local computer repair shop to see how much they'd charge to possibly recover the Sims 4 files.