Selectively delete files from File manager

We have built a dashboard for users to record a video using the Video Recorder plugin. These videos are saved in our bubble database.
However, we had added functionality where the user can retake videos until he is satisfied with the final video. But we had forgotten to add the workflow that deletes the previous video before overwriting. This has led to a large number of junk videos in our storage (File Manager) causing us to run out of storage.

So, we’d like to know if there is any way to delete the videos in our file manager that are not linked to a record in our database?

Only way is to do it manually