I have the same problem! none of my saves work, I can't recover or delete them and when I try to start a new save my game crashes.. It says Error code 22 but nothing I read online works to solve it
EDIT
Apparently Windows Security stopped Sims 4 to be repaired?(my computer is not in eglish so idk if the names make sense)
I happened to look at my notifs and it showed me that ts4.exe was denied access from changing it's files because its a secured folder (so stopped from repairing it guess).
Go on ransomware protection* and then on blocking history* and on my computer it showed me that access to a secured folder was denied. Click on the arrow down then at the bottom controlled folder access settings* then again at the bottom you click on something that allows you to give permission to certain apps to change folders/files. Click on the plus and then recently blocked apps, choose ts4.exe and repair the game again. I hope it makes sense, maybe someone can explain it better.
*translated to the best of my abilities lol