I was given this iPhone 8 from a close friend of mine’s who has passed away recently.

Okay so I was given this iPhone 8 from a close friend of mine’s who has passed away recently. So I’m trying to put in my Apple ID into the phone but I don’t know my belated friends iCloud accounts password so it’s not letting me login to my own account, only on certain apps within the phone but I can’t login to the main account on the this iPhone!

I could really use some help with this issue so that I can get it resolved as quickly as possible. Thank you for your patience and also for any assistance you’re able to provide me