where do i uninstall add-ons?

@FunkySee14  Does your DLC show as owned and installed in the EA App, under Sims 4 > Manage > Manage add-ons?  There's no Uninstall option there either, but this will distinguish between two common and entirely distinct issues: DLC is listed as installed but isn't loading, and DLC isn't listed as owned.  Here are the respective master threads:

https://answers.ea.com/t5/PC/CURRENT-ISSUE-Sims-4-DLC-shows-as-installed-won-t-load-in-game/m-p/12416260

https://answers.ea.com/t5/PC/Sims-4-Packs-missing-from-EA-app/m-p/12225497

Please check out the relevent thread and try the suggestions there.  If you need more help, let me know which issue you're seeing and what happened when you tried the listed torubleshooting steps.