I’m not seeing a meta description in the < head > section in the source code of my site
This article is about the source code of your site. An example of the source code that should appear in the < head > section:
<meta name="description" content="Preferred description goes here"/>
If this is missing, check whether your theme's
header.php file contains a call to wp_head().
If you are looking for a place to enter your meta description in your post, you may want to check your settings using our article about the Yoast metabox is missing.