How to edit blog page in wordpress? there is no place to put shortcode

I have a shortcode I want to put on the sidebar which appear only on the blog page and the single post page.

so I created a field for this shortcode using Advanced custom fields plugin.

when I went to the blog page, I have not found the field or any place to add the shortcode to the sidebar on the blog and blog single.

what should I do, please?
and many thanks in advance