I can not see my photos in which i take.

Hello,

I can not see my photos that both i take with camera and i shoot in which screen.

Normally, I can look at photos; but now, I don't know what happened. So I need to help that how can I see my photos that i shoot.

I looked that "optimize iPhone storage" and that "icloud photo library". But it is not worked. I can hear its sounds when I shoot.
Now, what can I do? Thanks For your helps.