This was designed for keeping files hidden from casual snooping, and I've priced it as such.:) How to Buy Apps from the App Store on Mac 2022

Invisible is a privacy-focused utility designed to keep your personal documents away from unwanted eyes. Rather than encrypting files, it uses the macOS system's built-in functionality to flag files as "hidden," making them instantly vanish from Finder.

Quickly hide all desktop icons, which is useful for taking clean screenshots or recording screencasts.

You can double-click or use "Quick Look" (spacebar) to view and edit files directly within the Invisible interface without making them visible to the rest of the system. How to Download and Install Invisible - App Store