If your trying to get some deleted photos found or restored on your galaxy s6 theres some things you can do. You might not realize this but there actually a couple of apps on your phone that automatically save photos. The first one is google drive which is in your apps section, and the second one is drop box which you have to have an account for but its worth checking it anyways. When you open google drive you need to simply browse through the saved categories it will automatically open for you. As far as drop box goes open it up to see if you registered or an account and possibly forgot to see if there are any saved files in there as well.
If your still having trouble restoring deleted photos on your galaxy s6 all hope is still not lost. Whichever computer you plug your phone into go on that computer to see if it saved any files or documents. There is a good chance that your phone has a saved folder on the computer you had plugged it into previously. If your still having no luck go to the play store and download a third party app that restores deleted files theres lots to choose from.