How to Fix Comments section and Remove Comments on Attachment File Page

Hello.

There isn’t a “Quick Edit” link to Media files, where I usually go to unclick the Allow Comments option.

Is there a way to remove the “Leave a Reply” on my Attachment File pages?

Here is a link to an attachment page on my site:
https://jl-gazelle.com/mixed-media/manifest-now-2013/

I am also wondering, for the comments “Leave a Reply” section, how to fix it so the Comment box is smaller, and the “You may you use HTML tags and attributes” to be a smaller font size or completely removed? (This is for my other posts)