I tried to test the speed of my website because I tried it on the hendphone too slowly, and when I tried to open a site provided by Google to test the speed the results were like this
"Lighthouse returned error: FAILED_DOCUMENT_REQUEST. Lighthouse could not load the page you requested smoothly. Make sure you test the correct URLs and that the server responds well to all requests. (Details: net :: ERR_TIMED_OUT) Close"