iTunes podcast get feed url

Question

I am trying to get feed url from iTunes podcast, for example https://podcasts.apple.com/us/channel/lemonada/id6442462434

    var url = 'https://itunes.apple.com/lookup'

    var params = 'id='+id+'&entity=podcast';

    xhrRequest = new XMLHttpRequest();
    xhrRequest.onreadystatechange = function() {
        if (xhrRequest.readyState == 4) {

        
            console.log(xhrRequest.responseText)
        }
    }
    xhrRequest.onerror = function(e) { 
       
    };
    xhrRequest.open('POST', url);
    xhrRequest.setRequestHeader("Content-Type", 'application/x-www-form-urlencoded');
    xhrRequest.send(params);

But I get empty results, like:

{resultCount: 0, results: Array(0)}

I want to get feed url so I can parse podcast rss.