How to parse odds on the site?

Question

PHP

The site from which you need to parse coefficients - csgorun.pro
There is such a code

function curlGetPage ($url, $referer = 'https://google.com/')
{
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36 ');
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_REFERER, $referer);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $response = curl_exec($ch);
  curl_close($ch);

  return $response;
}


echo curlGetPage('https://csgorun.pro/');

When outputting, it doesn’t want to show anything, having learned a little information, I came to the conclusion that there is a ban on the site, but how to get around it?