This is very normal, It is working and there is no issue, as you are running a vanilla magento (fresh install with empty data) .
You can edit/build the home page in Admin menu : Content > elements > Pages, and then choose home page.
If you are just testing magento and need sample data, including sample homepage, then follow the steps here : https://devdocs.magento.com/guides/v2.3/install-gde/install/sample-data-after-composer.html