Sharing and collaborating in OneDrive is a powerful way of working. Manage your shared files/folders by using the Shared feature in the menu on the left in OneDrive. Look to the top of the window to see two categories: Shared WITH you or Shared BY you.
Click on each of them to see the list of documents and perhaps review whether you still need to be sharing a document.
Learn the basics of Microsoft 365 by signing up to 1:1 Virtual Coaching at its.humber.ca/coaching.