There are several ways to add social sharing buttons on Drupal 8, but one of the simplest methods is to use a module. Here are the steps to install and enable a social sharing module:
1. Go to Drupal.org and search for a social sharing module. One popular option is the “Social Share” module.
1. Download the module and save it to your computer.
1. Log in to your Drupal site with administrator rights.
1. Click on “Extend” in the top menu.
1. Scroll down to find the “Install new module” section.
1. Click on the “Choose file” button and select the downloaded module file.
1. Click on “Install” to complete the installation process.
1. Go to the “Configuration” menu and select “Social Share Configuration”.
1. Choose which social networks you would like to include in the sharing options.
1. Save the changes and check your website to see the social sharing buttons on your pages or posts.
Note: Depending on the module, there may be additional configuration steps required. Be sure to read the documentation or the module’s website for more information.