RSS

I am using K2. I have added RSS widget. It only show the 1 post. I look everywhere and I cannot seem to find how to adjust it so it can show all of my post. Can you point me in the right direction so I can read how to do this. It is probably simple as it works realy well. But I would like my viewers to receive more than one article when the click on the rss feed

Thanks a million

Just in case here is the site https://theanxietycures.net/articles

Gilles