Iphone 5 restored factory settings, lost all photos. Can they be recovered?

My iphone recently restored to its original factory settings and i lost all of my pictures. I don't think my photos were backed-up in my cloud like i thought because when i sign into my cloud, i can look at all of my things except pictures, that button just does not show up.

I have tried a few downloaded apps, like EaseUs MobiSaver and iFunBox.com, and all those seem to recover 2 things:

1.) text messages from my very first day of having this phone and nothing after and 2.) all photos and text messages starting the day my iphone recovered and lost all its important photos.

Does anyone know why i can't recover any photos from before my iphone was restored? Or know of all tricks to retrieve them?

If you had no backup or saved them to a computer you're out of luck.