@Jadine85: Did you delete the photos from your Gallery and, if so, was Recycle Bin activated at the time, and visible as an option by tapping the 3 dots in the top right of the Gallery app > Recycle Bin? If you tap the 3 dots > Settings, is 'Sync with Samsung Cloud' enabled? If the images aren't present in the recycle bin or Samsung Cloud then please check Google photos by going to Apps > Google (folder) > Photos, to see if an archive of your images has been saved here.
I am having the same problem, recycle bin is active. When I delete it asked if wanted file move to recycle bin, so click 'move to recycle bin' but when I look in there, the file is not listed. Other files are there but no image files. Please help!