Add the server Block

sudo nano /etc/nginx/sites-available/your_domain

Add the following configuration block, which is similar to the default, but updated for your new directory and domain name:

server {
        listen 80;
        listen [::]:80;

        root /var/www/your_domain/html;
        index index.html index.htm index.nginx-debian.html;

        server_name your_domain www.your_domain;

        location / {
                try_files $uri $uri/ =404;
        }
}

Enable this server block by creating a symbolic link to your custom configuration file inside the sites-enabled directory, which Nginx reads from during startup:

sudo ln -s /etc/nginx/sites-available/your_domain /etc/nginx/sites-enabled