All my existing household gone

nato-star93​  Are your saves and Tray (Library) files gone?  Or are your saves present but your sims are missing once you load the saves?  If your files are gone, please look over this guide to missing saves and other user content:

⚙️[PC] Sims 4 Missing User Content (saves, mods, etc.) | EA Forums - 12636780

If your saves are present but the sims are not, please remove your entire Mods folder and try loading a backup version of an affected save:

https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/