Not what your browser shows you
Your own Google results are personalised by location, history and account — and you click your own site more than anyone, which inflates its position for you specifically.
This runs a clean, unpersonalised query for the country and device you pick. It is the position a stranger sees, which is the only one worth acting on.
Read the top 10 too
Your number is only half the story. The pages above you tell you what Google currently believes the query deserves — a comparison, a how-to guide, a product page, a forum thread.
If everything ranking is a 2,000-word guide and you published a 400-word product page, the gap is not authority. It is format.