Huawei ascend y320 u10 won't factory reset, unflashable, google apps crash spam,etc

my friends huawei y320 u10 gapps and many other process keep crashing (android core is one of it). and its spamming error message

tried factory reset, it said reset success, but all my data is still there and the crashing persist.

tried flashing the stock firmware, it said success, but everything from before the flash is still there, and the crashing error persist. (tried adb ,and sd card)

and i also found that in the storage setting , there is an internal storage and phone storage. and i found that everything that is usually sdcard0 on my other phone.

there is an option to delete phone storage, but it also doesn't work (altough it said success.)

i also can't uninstall any app on that phone (currently there is : piano tiles, farm quest saga, instagram, weibo). everytime i tried to uninstall, launcher,setting,and nearly everything else crashes,

adb (at pc ) can't read the phone unless its doing install update from adb option (at the phone).

tried using ubuntu,kali , windows, mac (pc) and tried a lot of different usb cables)

help

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