Select full-width column (or any column layout)
Click on the Add Module icon.
Select the Divi Loop module.
First, configure your query to fetch your desired posts.
Now select a skin that you must have created already.
Choose your desired skin layout.
Now select slider from the layout option.
You will see some slider options enabled.
Adjust the slider options to your need.
You can even create a carousel by adjusting the number of items per screen option.
That's it, you have a nice post carousel with your own designed skin.