How do you add more posts in one line?

Here is some sample code that shows one way to do this:

https://wordpress.mcdspot.com/2010/11/28/align-posts-in-a-row/

Thanks for the link! Unfortunately i dont know in wich php file do i need to add this..ahhh.

The code is only an example and cannot be added directly into your templates. The exact coding you need to do depends on your theme.

Perhaps your best bet would be to find a theme that offers a ‘magazine’ style layout without needing any special coding.

this is the theme:

https://themeforest.net/item/marisa-a-wordpress-magazine-theme/full_screen_preview/1408067

as you see they have 3 posts next to eachother, i thought this would be an easier task or that there is the possibility to determine the amount of posts in one row but i was wrong.

This is a paid theme. We cannot access the code to know where to modify it. You should contact the theme supplier.