External Storage Problem

I recently added a 128gb USB flash drive for external storage with my Firestick 4K Max. I copied a few apps from internal storage to the USB Drive using X-Plore File Manager. I first tried to delete one of the apps from internal storage using X-Plore, but when I selected the app, the delete menu icon was grayed-out and I could not select it. Then I went to Settings, Applications, Manage Installed Applications. I selected the app and then clicked on uninstall. It removed the app from both internal storage and from external USB storage. What am I missing or doing wrong?

Please review this for all firestick issues and guides, if the following hasn’t worked feel free to ask.

This should resolve most to all issues.