How To Convert A Usb Flash Drive To Usb Dongle How Can I Convert A Card Reader To A Usb Drive Instead Of The Other Way Around?

How can I convert a card reader to a usb drive instead of the other way around? - how to convert a usb flash drive to usb dongle

My USB drive on my computer does not work, but not my card reader. So I use all my media card, but my flash drives. Is there a converter or a way that not even the USB drive to start, my USB pen can define again?