If you have comparatively fewer articles on your website, then you should start your keyword research from scratch .
Start with your buyer persona's three most important core problems. Or survey your audience.
The purpose is to group the problems and assign relevant short-tail keywords to them. Make sure the short-tail keywords have sufficient volume and that you can write more than 20 articles on each.
You will then write a comprehensive post about this short-tail keyword and cover the topic broadly advertising database (think of it as the table of contents).
Leslie Ye took on the task of updating HubSpot's content in clusters and redesigning hub pages. Here's the question she recommends for selecting your hubs:
“Would this page answer every question a reader might have when searching for keyword X, and is it comprehensive enough to be an umbrella for 20-30 posts?”