memory – Encrypted forgot the password WITHOUT recovery key

I forgot my password for my Macbook Pro and I do not have the recovery key. I do not remember putting my computer in the FileVault lock … to the point that I forgot my password. I need help: (

I have tried the new method that I found with the storage list in the terminal. But I always need to type a password. I receive "Error: -69749: The main storage Voulume can not be unlocked.

I do not really want to try to erase everything I have so many memories there.

Please, someone help!
Apple Store was not of any help.