increase number of post per line in a given category

Hello,

I am using Orvis theme and when i click on a category, instead of having all my posts one after one when scrolling down, I would like to have several links to my post blogs (with a smaller version of the picture and a short title ) on the same row.
Here is an example of what I would like to do :
https://mycreativedays.porch.com/category/recipes/
and here is my website :
https://asterie.jp/category/food/

thanks in advance,
S