View Nginx and Apache access.log files in your Browser.
https://rolandstarke.github.io/access-log-viewer/
Determine the amount of hits, visitors, bandwidth by the hour, or date.
Determine the visitors originating country.
Determine the browser and device type like desktop or mobile.
Determine referring websites that send traffic to your websites via direct links.
Determine the urls with the most hits.
Determine how often your server respondet with 200, 404, 500, ... status codes.