How do I make sure that articles from certain category do not display on main page?

I want them to display on a subpage only.

So let’s say I have 7 articles under “main”.

I want all of these to display on main page, homepage.

Then let’s say I have 20 articles on “category1”.

I want them all to display in website.com/category1 but not on main page.

How to do that? Any recommended plugins?