My files are now Encrypted i need help

I used the repository on my personal device obviously didn't read till later that it uses Aes-256 encryption and only found out a few days later that my files were missing however since I used my own device it still remains on my device as all the encrypted contents are still there however there is no password or decrytor I can use (The files are in a format of .locked )

Can I recover my files?

Which app can I use to maybe try and enter the password?

How does the tool work?

Etc
I really want to recover these files 😫 as it's a lot if personal data but not so important it includes photos/videos/documents/music basically my downloaded folder but all I care about is the videos and photos

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