activation lock

The device is useless and should be properly recycled. Activation lock cannot be bypassed. Consider it a lesson learned. You've been scammed by a thief.

You should recycle it, but basically, you bought a worthless phone.

No, of course not, don't throw it away. Recycle it so you don't affect the environment. The point is the phone can never be used by anyone any longer. It is a useless brick/doorstop.

You are welcome.