There is an option to change the layout of the page, blog/archives, and single post.
Go to Appearance >> Customize >> General Settings >> Sidebar Layout
Blog/Archives
In the Blog/Archive option, choose the layout for the blog or archive from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.
Single Post
In the Single post option, choose the layout for the single post page from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.
Page
In the Page option, choose the layout for the page from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.
