Your rss feed for your sitecore website shows data in xml . Rss is is an XML-based format for handling web content syndication. If you want to show your data in your webpage as a Html content , like
Title: Test name , Description : Test Description , Pubdate: 3 Jan 2019
I think use this https://html-agility-pack.net/
This Html Agility Pack is written in C# to parse the XPath or XSLT in HTML Dom , for e.g.
var result = wc.DownloadString("your feed url");
var doc = new HtmlDocument();
var links = doc.DocumentNode.SelectNodes("/rss/channel/item/link");