By default, WordPress shows all widgets that you put in the sidebar on every page. This is not always desirable. That is why there is the ‘Display widgets’ plugin. With this plugin you can show different widgets on different pages.
When you have installed the plugin on your WordPress installation (see link to plugin), then go to your Widgets (‘View’> ‘Widgets’).
You will see that an extra field has been added to each Widget with a dropdown with ‘Hide on checked pages’.
In it you can scroll (down) and the page where you don’t want the widget can be checked. Then click on ‘Save’.
DO YOU WANT TO CHECK THE PAGES WHERE YOU WANT THE WIDGET TO BE SHOWN?
Then choose ‘Show on checked pages’ at the dropdown and tick the pages where you want this widget to appear in the sidebar.
Then click ‘save’