Homepage section feeds

Hello,

I’m just a few days in to using WordPress. I will try my best to explain the struggle I’m having.
My website is not yet live so I cannot link to show the problem.

I am using the free theme ‘Islemag’ and cannot work out how to get content from specific pages across my site to appear in the related section on the homepage.
For example, when I write an article for the sport page, it appears on every section on the homepage.
The same happens for new blog posts, being displayed in every section on the homepage.

I cannot work out how to filter or direct the page content to it’s related homepage section.

Thank you in advance for any assistance you may be able to send my way.

M.