Is there a way to customize the blog page for posts with Gutenberg?

I asked another question about this but I don’t think I clearly described what I am looking for. My apologies! We have a site in local development with a static front page and a page for posts, which will be our blog. There doesn’t seem to be any way to customize the style of this blog page that lists posts specifically. Such as adding a sidebar, adding widgets, etc. I am unable to add or manipulate any Gutenberg blocks on the page. Is there a workaround for this or is this a case where I need to edit php files? There doesn’t seem to be any option to choose a specific template in page attributes either.

• This topic was modified 5 years, 2 months ago by Andrew Nevins. Reason: Removed modlook tag