Hello Alexander Kottaras,
I'm sorry to hear you're having trouble with your laptop recovery.
However, unfortunately, Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key. It means you will need to find it out by yourself.
To do this, you need to follow the steps in Finding your BitLocker recovery key in Windows - Microsoft Support. If none of these methods work, recovering your data without the recovery key might be challenging due to the encryption. If this is the case, you may need to reset your device, which could result in data loss.
Best regards,
Lei