I safe my pictures on Google how can I have them back

Solution
Log in to your Google account on a PC or laptop and follow the instructions. Once you've rescued them into that PC, you can put them back on to a mobie device if that's where you want them.
They don't automatically become tied up a Google account and if you didn't synchronise with your account, you don't get them back.

If you look through the file system and find a folder named .LOST and with luck, you may find them in there. It's the Android equivalent to the Windows Recycle Bin.