I can’t unlock iPhone under activation lock and nobody remembers Apple ID password or anything.

This is a user helping other users with tech questions

forum, you are not addressing apple here  just  fellow users

the activation lock is not really on

the ios device it's a theft protection measure on apples servers

it needs to be removed How to remove Activation Lock - Apple Support

if you don't know your appleID Recover Your Apple ID - Apple

if that does not help you then you

need the assistance of apple

Get Support (apple.com) and or Genius Bar Reservation and Apple

Support Options - Apple