1. Please use english for this forum.
2. You attach only one photo but write about 3 photos.
3. Please, post text when it's possible. Do not post screenshots...
3. In case before start this script you not create target directory (2018-01) then every file was moved to file 2018-01 and every next - owerwrite previos. So you lost this files...
May be, it's more safe - specify destination file, not just destination directory... Like:
mv <source>/file1.zip <destination>/file1.zip
check that destination dir present...
4. In any case - you should see and analyze script output.