Change Comment Bubbles to Comments below Post

I’m new to this. I have the Twenty Eleven Theme and use it as my website with a Blog Page. I downloaded JetPack, as suggested by a friend, and my blog page works. However, the comments/replies are in a bubble instead of at the bottom of the page as I see in most blogs. Also, when someone clicks the bubble (which many readers don’t even know is how they leave comments), the right sidebar disappears.

How to I get rid of the bubbles/balloons for comments and change it to the bottom of the page location? I know nothing about coding, so I really, really hope it doesn’t require me to do coding.

my blog is at https://www.brianthiem.com/blog