Utilize SEO tools like Ahrefs, SEMrush, or Moz to search for websites within your niche or industry that have lower Domain Authority but still receive substantial organic traffic. These tools often provide a “Traffic” or “Organic Keywords” metric to gauge a site’s traffic potential.
You can also use specialty niche finding sites, such as NicheSiteMetrics or NicheFinder. Both of these tools are web-based platform designed to help users identify profitable niche markets for their blogging business.
These tools are very easy to use and cost far less than the bigger tools like Ahrefs or SEMrush. They basically draw data from these two platforms and organize it into easily searchable database.