Rich text section stays the same on other pages

So I used the code editor on two of my pages and wrote

{% section 'rich-text' %} {% section 'list-collections-template' %}

When I write custom text in the rich text section on one of my pages it saves it to all pages.
for example if I wrote “welcome to first category” in the rich text section on one page and save it, then my other page says the same. I want both pages to have a different text, how do I do this.

PS. It is not caused by the page template suffix.

because it is static section and static section can be used only one page (you can use it on different pages but it,s result will be same on all pages )

SAME ISSUE here, how to resolve??