Many phones don't share the memory card as a drive without some setting changes and as Android phones are a varied lot, I only know to look around and can't guess how your phone differs.
https://www.google.com/search?q=USB+driver+for+my+DooGee+Mobile+Phone&ie=utf-8&oe=utf-8 does find the downloads at various but there appears to be some 6 or more models. As such you can refine the search and check XDA Developers too.
My fix? Install Dropbox and do this the easy way.
I have just bought a DooGee DG750 mobile phone which work,s well and runs Android 4.4.2 I want to get my photos from the phone SD card onto my XP SP3 PC and think I need a driver - the phone is not visible from the PC by cable and the XP OS says "hardware not recognised". Please can anyone advise where I can get the driver? Will it only come from the phone manufacturer? Thanks in advance for your advice.