Execute PHP in subdirectory location Nginx

Question

I have the problem that when I want to run the PHP script it does not run

File Structure

/home/myapp/landing
* contact.php
* index.html

NGINX Conf

location / {
    alias /home/myapp/main;
}

location /landing-page {
     alias /home/myapp/landing/;

     location ~ \.php$ {
          try_files $uri =404;
          fastcgi_split_path_info ^(.+\.php)(/.+)$;
          fastcgi_pass unix:/path/to/php.sock;
          fastcgi_index index.php;
          fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
          #also tried this
          #fastcgi_param SCRIPT_FILENAME /home/myapp/landing$fastcgi_script_name;
          include fastcgi_params;
     }
}