Each of these costs nothing and tells you something specific.
Search for a full sentence copied from one of your own pages, in quotation marks. If nothing comes back, that page is very likely not stored at all, which is a different and more urgent problem than ranking badly.
Open your Google Business Profile and read it as a stranger would. Check the category, the areas listed, the hours and the description against what your website says. Where the two disagree, the site and the profile are working against each other.
Find out who owns your Search Console and analytics accounts. If the answer is a previous developer, or nobody knows, that is worth fixing regardless of what you decide about the rest, because it is the only first hand view of what search engines are doing with your site.
Type the thing you sell followed by your town and look at what comes back. Not to be discouraged by it, but to see what kind of page is currently being shown: a directory, a national brand, a competitor's service page, or a map listing. That tells you what you would need to match.
Finally, list the questions customers actually ask you before they buy. Those questions are the pages you are missing, almost every time, and you already know them better than any tool does.