These animals are born with the instinct that they are prey. They want to burrow and hide. If you want to tame your bunny, Try giving it less freedom at the beginning, a cage that it will feel safe in, and start with small amounts of play time and treats. Just make sure any contact is quiet and calm until the bunny starts to trust and relax. It sound like the bunny is overwhelmed and afraid. It is not anyones fault.