Can't find program my pictures were in.

freegal37

Prominent
Nov 3, 2017
2
0
510
Today my phone completely erased everything cannot explain why but I'm fixing it. The icon for my pictures I can't find it's like they changed pictures how do I go into my phone and is there a file folder that will tell me which icon download and maybe they'll be there or they completely gone. Please help
 

freegal37

Prominent
Nov 3, 2017
2
0
510