Help please

Hi friends
I’m very confuse
I have Samsung galaxy g313hn
there was some kind of data in the set before flash
and after 100% successfully flashing
the data is still in the set
whats app skype etc is not deleted after flash


Operation: Flash
Selected model: SM-G313HN
Software version: 20.5

File analysis… OK
Total file size: 0x37147598 (881 Mb)
Searching USB Flash Interface… detected COM23
Setup connection… OK
Reading PIT from phone… OK
Sending boot.img… OK
Sending recovery.img… OK
Sending system.img… OK
Flashing done (time – 00:04:18)

Done with Samsung Tool v.20.5