The free Google Search Console service is used to monitor the position of your website in Google search results. It provides valuable insights, such as the position your pages occupy for selected keywords, the number of people who clicked on your website, the keywords they used, which of your pages are the most popular for given phrases, and the countries and devices internet users are using.
Installing this service is one of the must haves of the websites I manage. Google provides official WordPress plugin for their services: Site Kit by Google. You can download the free plugin from the link or install from WordPress plugins page.