Hello iwie i forget the pin i need for unlocking the phone, usually i always take the fingerprint. Can I unlock iwie without losing any data, since I have very important documents on it?
Yes via adb, but only works if the phone has enabled USB debugging.
How do I know if this is activated?
Plug it into the PC & then you'll get it.
No, unfortunately not.
You can also change your PIN using the Google service, but only if you're signed in to your phone with a gmail email. Then simply "find my android" in the browser and you would have to see your phone.