Access LOCAL SERVER ISPConfig for sites with Cloudflare Tunnel ( sites custom port ISPconfig )

How to access a site on a local ISP config server by calling localhostort

From the original port 80 to 1020 and so on?

Because I want to access with Cloudflare tunnel so that my local web can be accessed via the internet. Because my server does not have a public IP

If all sites use Port 80, Tunneling will be confused because the sites collide with each other. This is where I use the Custom Port trick

I changed via /etc/nginx/ sites available and site enable

I managed to change port 80 to 1020 to call the site in the browser with the local IP 192.168.100.54:1020 THIS WORKED

However, when I used Cloudflare Tunnel to be able to call the subdomain test.domain.com which leads to http*://localhost:1020 it didn't work. it always redirects to test.domain.com:1020 which RESULTS BLANK

I have added the following but it still doesn't work

listen *:1020;
listen 127.0.0.1:1020;
listen [::]:1020;