cleaning up iPhone photo library
I'm a little confused about how to clean up my iPhone photo library. I have several hundred pictures, and most have been allocated into albums. That's handy. But when I do so, ALL of those pictures still appear on my main Photos screen. I want to clean up that screen to just have photos there that aren't in my albums. Is there any way to do that? That is, when I select a photo in my up-front photo library to go in an album, how do I delete it from the up-front library?
iPhone SE