Current Page Crumb

Current Page Crumb extends the Drupal 8 core system breadcrumbs to append the current page title as a text only breadcrumb. Admin paths are left unmodified. The module has no configuration.

To use it, download the module to your modules folder and enable the module on the extend page and make sure the system breadcrumbs are placed in your theme.

If you're looking for a more advanced module with configuration options for each variable, you want a module I ported to Drupal 8 called Easy Breadcrumb: https://www.drupal.org/project/easy_breadcrumb