I deleted the "Options.ini" and "UserSetting.ini" in the EA folder (Documents > Electronic Arts > Sims 4 folder) before loading up the game, and it seemed to fix my issue. I will link the posts I found that shared this information. Bluebellflora and Tremayne4260 recommended this, and it worked for me. Hopefully, it also works for you.
I think the way those files work are a "save" of the preferences you had before, but your game is being buggy and not loading the files properly – by deleting that "save-state" it will refresh it to like factory settings. But to be fair I did a lot of troubleshooting beforehand too (using bluebellflora's post and the standard uninstall and reinstall - because recently I also had this issue).
Wishing you luck in this fix though!
sources:
Re: [MAC] the sims 4 graphics | EA Forums - 11624581
Packs Deactivated?? | EA Forums - 13307101