How config nginx for a WEB site and a sub url of this WEB site

I currently migrate from IIS to an Debian Nginx server.

The main site test.country-radio.eu works in general, but the TYPO3 part required more debugging. And for this debugging I would need PHPmyadmin.

I following an instruction, where PHPmyadmin is installed in an own subdirectory.

But if I try to access phpmyadmin.test.country-radio.eu/index.php I get an responce from TYPO3, what is not the result I want.

Because TYPO3 is in inside test.country-radio.eu and not in phpmyadmin.test.country-radio.eu.

Under /etc/nginx/sites-available I have created two files test.country-radio.eu and phpmyadmin.test.country-radio.eu. I also have generated the links for both sides in sites-enabled.

But Nginx is using the the test.country-radio.eu and not phpmyadmin.test.country.eu if I try to call in firefoxhttps://phpmyadmin.test.country-radio.eu.

I found a lot of examples for different sites, but not for my use case.

What is wrong?

Edit

the server_names are test.country-radio.eu and phpmyadmin.test.country-radio.eu and the default one is test.country-radio.eu.

Edit 2

Here the beginning of the test.country-radio.eu

server {
    
    client_max_body_size 200M;
    root /var/www/html/typo3/public/;
    
    index index.php install.php index.html index.nginx-debian.html;
    
    server_name hpradio.country-radio.eu;
    # add_header Content-Security-Policy $csp_header;
    
    fastcgi_buffers 16 32k;
    fastcgi_buffer_size 64k;
    proxy_buffer_size 256k;
    proxy_buffers 4 512k;
    proxy_busy_buffers_size 512k;
    
    add_header X-debug-message "Test only" always;

    ##### Start HGA #####
    location ~* ^/(cr|priv|phpmyadmin|test)/ {
    alias /var/www/html/;
    autoindex on;
    autoindex_exact_size off;
    autoindex_localtime on;
    index index.php index.html;
    location ~ \.php$ {
        try_files     $fastcgi_script_name =404;
        include       fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_pass  unix:/run/php/php8.4-fpm.sock;
        }
    }
    ##### End HGA #####

And here the phpmyadmin.test.country-radio.eu file.

server {
    listen 80;
    listen [::]:80;
    server_name phpmyadmin.hpradio.country-radio.eu;
    root /usr/share/phpmyadmin/;
    index index.php index.html index.htm index.nginx-debian.html;
    
    access_log /var/log/nginx/phpmyadmin_access.log;
    error_log /var/log/nginx/phpmyadmin_error.log;
    
    location / {
        try_files $uri $uri/ /index.php;
    }
    
    location ~ ^/(doc|sql|setup)/ {
        deny all;
    }
    
    location ~\.php$ {
        try_files     $fastcgi_script_name =404;
        include       fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_pass  unix:/run/php/php8.4-fpm.sock;
    }
    
    location ~ /\.ht {
        deny all;
    }
}

Good to know, that the file name has no function.