Here is how you would attach a menu-link. Add a file my_module.links.menu.yml to your module:
my_module.admin_settings_form: title: 'MyModule Settings' route_name: my_module.admin_settings_form description: 'Custom settings' parent: system.admin weight: 99
Make sure you clear cache.
Want to know the route of the page you would like to send the link to? Check: Get route of a views page with drupal console