Hi,
Your concern about the discrepancy between singular and plural rankings is valid and common in SEO. The difference often arises due to variations in user intent: plural searches are commonly associated with looking for lists or comparisons, while singular often implies the need for a specific solution.
As a practical next step, I'd recommend examining the top 3 search results for the plural form of the keyword. Check not only the headings and content but also if these pages are ranking with the same URLs for both the singular and plural queries. This can offer valuable insights into how Google interprets user intent for these terms.
Based on what you find, consider making coherent updates to your own content. If the same URLs rank for both versions, then aligning your content more closely with these top results might improve your ranking for the plural term as well.
I hope this provides a more actionable path forward for you.
