How to get a page that list links or buttons to all sub-pages

I created a few pages (for example one of them is named “videos”). After I have created my “parent page” named “videos”, I want to make it display links to all of my “child pages” after you click on the parent page. How can I do this? My site address so you’ll see what I’m working with: https://www.sociallyurban.com

EXAMPLE:

Videos (parent)
a. video #1
b. video #2
c. video #3

Instead of getting a drop-down menu when I click on “Videos” I want the link to take me to a page that displays a link (or button) for each child page I post under Videos. Or would the “portfolio” option work better than choosing “pages”?

I know I’m probably not explaining this in the correct way but I’m hoping someone will understand what I mean.

Thanks