How to protect the content from copying?
Protect your website from copying your content
Switch off the "Copy" function using the right mouse button.
In this method, add an attribute below in tag <body …>:
Forbid marking the text
Plugins have more setting options if you want to go into more detail. You could e.g. For example, only copying texts from posts or receiving messages or sound signals when copying is prohibited. Some of the most popular plugins include Secure Copy Content Protection and Content Locking & WP Content Copy Protection & No Right Click.
I hope now you have a better idea and were able to choose one of the methods.