On the search bar up top, type in “Pages” and select the first option as seen below.
Click on the dropdown and select the page that you’d like to edit.
Scroll down to the section you’re looking to change and click on the pencil icon to edit it.
You should now be able to change, edit or delete content as you see fit.
Once done, don't forget to click on the green "Save Updates" button to save the changes.