LG Tribute 2

I plugged the phone to my computer and I looked thru every directory.
cant find where 3.4gigs of space went?!?!
Please Help.
Thanks !
I didn't find the right solution from the internet.
References:
- https://forums.anandtech.com/threads/internal-storage-600meg-free-out-of-4gig.2503558/
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