You are pretty low on storage space. I'm not sure if it's the same on all Android versions, so you might have to look around, but if I go to Settings, then Storage it gives me a breakdown of what's using the space (Apps, Videos, Images, and a bunch of other categories). That might give you a hint as to what's using that 117Gb. If it's Apps, tapping that line in the list takes you to a list of all your apps, showing how much space each is using. There may be something that you're not using that you can uninstall.