There is nothing worse than writing amazing content on your website and then seeing it used by someone else without your consent either on another website or in a social media post word for damn work or an image you took or created yourself that you are very chuffed about.
Here is one solution, a free WordPress plugin called:
WP Content Copy Protection & No Right Click
You can use this plugin to stop people selecting text, copying it or saving images from your website. I know some photographers who use this religiously to protect their images in particular.
Now I want to also say that there are other methods to extract content out there from a web page that makes it hard to stop a determined copycat. But this will at least deter the more regular people from attempting to copy your content and maybe turn their efforts to actually thinking for themselves.