Backup all images, screenshots, edited pics, downloads etc (not just camera pics)

[Leo300]

I am trying to 'backup' the content of my Sony Xperia Z as i've got a new phone. However when I 'backup' to my SD card it only does it for the pics i've taken with my camera, not all images. Is there a way to backup all images? I have tried Google Pics but none of the 'device folders' are listed for me to select them to backup.

[Uliwooly]

@Leo300 

Download a Task Manager > then access the internal storage > copy albums such as whatsapp, instagram, downloads, etc > paste them on the SD card

You can also open the album app > tap on any of the pictures that aren't backed up > menu > details > File path > it should tell you the file's/pictures' location