Multiple Column Post??

you can use query_posts and wp_reset_query function to show, whatever you want, or use custom wp queries.. whatever is simple to you..

??

Isn’t that a tumblr theme? It’s apples and oranges, but if you want to use multiple columns within single page, you can use the Page Columnist plugin:
https://www.code-styling.de/english/development/wordpress-plugin-page-columnist-en

I have the same problem but I manage to solve it.

You can actually set the numbers of columns you want to display not just three columns.

https://www.asiawebdevservices.com/three-column-post-in-wordpress/