See Google search terms (keywords)
Since 2011 all searches, keywords and search terms on Google has been encrypted, meaning you have to use Google Search Console to view that data. It is not available anywhere else (unless software connects to your GSC account).
That means, if you want to see what people are searching for that lead them to your site on Google's search engine, you need a free Google Search Console account.
You can use a GSC account to see your search terms and queries.
In the future Fathom will offer integration with GSC, but even then, you'll need a GSC account for that integration, so ensure you've got a GSC account if you'd like to see your search terms from Google.