The freezer tactic is for drives that will not spin up due to bearing problems. This is a case of physical damage.

This is a job for the pros. The more you play with the drive the less likely the pros are to be able to recover it and there's virtually no chance of anyone else getting anything off it.

They have to disassemble it and try to get the data off the platters. That's absolutely a pro-only job as it needs to be done in a cleanroom.