How to Hide WordPress Theme Name and Directory from the Source Code
This is the easiest way to hide WordPress theme from the source code:
For more information, visit, https://trustiko.com/hide-wordpress-theme-name/
For direct access to the plugin, visit: https://trustiko.com/HidemyWP
You can hide your website directories such as the wp-admin, wp-includes and the themes directory, also, you can rename the plugin names and make them secret for better security.
In other words, this Plugins that I've tried for many sites makes WordPress secure and protected like never before.