BitLocker Locked Me Out – What Can I Do?

I'm facing a major issue with my Windows Omen PC. I recently used Medicat for backup and antivirus, but now I'm being hit with a BitLocker prompt asking for a password I don't have. This is particularly frustrating since I can't access my Windows account either, which was set up a long time ago by my uncle. I don't even know his email anymore.

To make matters worse, I turned off boot security to let Medicat run, and now that seems to have caused BitLocker to kick in. I'm wondering if there's any way I can recover the code from my hard drive using Medicat or other tools, or if I should just restore from a backup. Is there a way to find the Windows account email or name through the BIOS? Or am I looking at having to reformat my PC and lose everything?