Contacts location/recovery

[AC Question]

Hi there,

I backed my whole phone (S6) up on an external hard drive, but I did so by using copy and paste option instead of backing data up on a cloud. I was wondering if this was a mistake as when I am checking the hard drive the data is there but I can't seem to find any contacts folder. Does that mean that I have lost all the contacts or is there any hidden folder where I can still access my contacts?

Thanks