Multiple columns for post listings via category view

Hi,

I’m not too well versed in CSS or PHP and couldn’t find a plugin to solve this specific request.

By default, when a user clicks on a category, it lists all the posts within that category in a single column. See here for example — https://www.waynehuang.net/category/vietnam/

I would like it so that the posts are displayed in two columns. Is there any way to change the layout to two or more columns? Thanks.