@nprofile1q... may I ask why/what threat you're trying to address? This might help with suggestions.
For instance, if you're on a shared device and want a very basic way to hide a file contents to other users, I'd assume something like age with a password protected key could work for you. In my experience is has a better interface and is much more convenient to use (and secure) than PGP
You can find more about age vs PGP in the context of file encryption there :
https://soatok.blog/2024/11/15/what-to-use-instead-of-pgp/#:~:text=Harubaki-,Encrypting%20Files,-Use%20ageBut I definitely wouldn't trust single file encryption too much if the threat is different (e.g a bad actor has access to your device) or if the files contents are sensitive.
Edit : if you already use a password manager that supports files (I know bitwarden do), that could be a good option too!