What storage folder did you delete? Did you back things up beforehand? If you deleted something from the internal storage without any backup, then it's pretty much gone. You could try a program like DiskDigger, but chances of success will be low.
Not sure about the warranty. Read the fine print of the Moto G warranty, which should have come with the phone.
All files are gone.
Only some Images I've taken are important to me that also gone.
obb files all. I didn't root. I formatted it & downloading all updates from beginning
Thank You B. Diddy for suggesting me a solution.
I've tried that but it needs root I don't know how to root moto g some root apps says it may void your warranty so I didn't do it.