The best way to feature videos and collections on your Home Page is to enable the Promoted Category (it might show as Featured Category to you) block in the theme editor and select a category.
NOTE: Most themes include a block on the Home Page called Promoted Category. If your theme does not have a featured category block, it may be under a different name: Ara = Most Watched, Phoenix = Browse Programs, and Pyxis = First Tab
Navigate to the Customization tab and click Customize > Home Page Customization. You'll see the Promoted Category option and can set the category here.