When I have an image that I just want to share, either in my Downloads or Google drive to someones email addy OR their contact in my Google Voice, I merely go to that image and click on it, then go down below, hitting, "Open," or double click on the image and it just gets added to that email or TEXT in Google voice, simple, Easy Peasy :-).

Same thing works if I want to post an image like in Facebook as long as it has that little CAMERA ICON at the bottom of where I am posting. If no little ICON, then yes, I need to use one of those POST IMAGE sites, to get that URL associated with the image. Sometimes I go to that trouble, sometimes I don't depending how important it may be to me to do that :-)