I usually use my old favorite file handler, Total Commander, although in Android (tablets anyway), it is a bit cumbersome compared to the PC version, on a cellphone it's near impossible with the small screen, and most men don't have the ideal fingers size for such a small precise operation,, I certainly don't. I just bought a new Samsung phone the other day and spent a lot of time setting it up and TC is not the ideal file handler for this sized screen. "My Files" was on it already and proved very helpful (Android 5.11). I like it,, and it found and moved all my pics etc, after a bit of searching...
You need a file handler. The simpler the better imho, but I also use the most complex ones to do more specialized jobs such as 'ES File Browser'...You need a file handler...
Al