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
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