Open the Facebook app, let the stories load (do not click on them), then turn on Airplane Mode. Watch the stories, then close the app completely. Warning: This method is not foolproof, as the view may be registered once you reconnect to the internet.
Use the "View As" tool on your profile page. This allows you to see exactly what your profile looks like to a stranger or the general public. Facebook Anonymous Viewer
The short answer is simple:
Avoid any application, extension, or website that promises to unlock private Facebook data. Guard your login credentials closely, prioritize your online safety, and rely on Facebook's native privacy settings to manage your digital footprint. Open the Facebook app, let the stories load