Hello,
I'm sorry to hear that you've had a negative experience with BitLocker. However, I want to clarify that BitLocker is a security feature that is designed to protect your data in case your device is lost or stolen. It is not intended to cause harm to your device or to force customers to buy new ones.
Please try to find the BitLocker recovery key by referring to this link:
Finding your BitLocker recovery key in Windows - Microsoft Support
If you can't find the BitLocker recovery key, the only solution is to reset the system or upgrade the system.
Best Regards,
Hania Lian