I test my website with pagespeed. But to know exact result I should wait for 28 days. Is there are any way to test this without waiting?
I have tried to refresh and clear cache. I have tried to use different browsers. Also I have tried to find some answers in documentation but without expected result.
The extension solution proposed by Ihar will only help you test your own experiences.
You can gather your own real user metrics without the 28-day aggregation, and with a lot more details:
https://web.dev/articles/vitals-ga4
https://bigcommerce.websiteadvantage.com.au/tag-rocket/articles/core-web-vitals-ga4-bigquery-data-studio/