[Theme: WP-Creativix] How to hide the sidebar in Posts?

I’m looking for a way to hide the sidebar in posts.

I’ve found the answer for pages, but concerning posts I’ve yet to find the answer.

(for pages: https://www.ads-software.com/support/topic/theme-wp-creativix-remove-right-column-on-pages-only?replies=7)

They state that just setting it to “no sidebar” works for pages. That works perfectly for pages, but there is no comparable option for posts. How can attain the same look for posts?

Thanks in advance!