The Chrome User Experience Report (CrUX) data is real-world data from around the world. It's the best source of independent data for elibigle websites

If you are seeking a user-friendly summary of your website you might also want to checkout search.google.com/search-console/core-web-vitals which can provide a great reference point, although the data can take time to update.

If you have real issues with your site performance and need fast data in order to act quickly you might want to checkout www.rumvision.com

Launch directly into your own customized CrUX Dashboard

What is a valid origin? https://www.example.com. Protocol (http or https), optional subdomain (www), and domain (example.com).