In short, Google has created certain metrics that will determine a few key factors that show a solid page experience. The better the page experience the higher your website will organically rank on Google. The specific metrics include mobile-friendly updates, page speed, HTTPS ranking boost, the intrusive interstitials penalty, safe browsing penalty and page usability. These are considered the Core Web Vitals.
Check to see if your website is mobile-friendly using this handy tool – CLICK HERE