How do I modify the built in web server on my M2 Mac running Sequoia

I have an M2 Mac Mini 2023. I'm running Sequoia 15.1. It has a running web server, obviously Apache, but I can't modify it because it's on a system drive. /System/Library/Templates/Data/private/etc/apache2/httpd.conf /System/Library/Templates/Data/private/etc/apache2/original/httpd.conf How can I modify it, or indeed even stop the server running? It's refusing all commands.