camera roll is larger than iCloud backup

hii, so I’ve recently just backed up my phone through iCloud, and noticed that the backup has photo library at 150.7gb but in my iPhone storage, it says I have 164gb used. Can anyone help with why?

I also have iCloud Photo Library turned OFF and is not synced.

I need to repair my phone and potentially switch over to a brand new one and am worried that I am missing out on 14gb of my camera roll in the backup.