CMS pages serve as static pages that allow the addition of text, videos, photographs, and more, providing the flexibility to create rich content and easily manage various items.The default Magento 2 CMS pages include:
Additionally, store owners can create custom CMS pages according to their specific requirements.When working with Magento 2 extension development or customization, it is common to interact with CMS pages.In such scenarios, it is useful to have access to all CMS pages in the system configuration for Magento 2.
For more information , please visit this :- https://meetanshi.com/blog/get-all-cms-pages-in-system-configuration-in-magento-2/