[solved] Cannot uninstall the module

Problem/Motivation

Cannot uninstall the module.
When I want to uninstall simplenews the module says that I can't because there are active "elements". But where? I deleted everything I could find including all subscriptions. I looked in the database, everything is empty. So, where are the things that hinder me from deleting the module?
I want to delete it because I recently upgraded from Drupal 9 to 10 and want to use the newest version. The old one hasn't been working for years.