If your website uses the WordPress Gutenberg Block editor, you can build the gallery directly in your POST/PAGE.
- Go to your WordPress Admin Panel / Pages menu.
- Click Add New or Edit open any existing page.
- Then, click on the +Plus button in the upper left hand corner.
- From there, select the Automatic YouTube Gallery from the drop down menu. Click on the Automatic YouTube Gallery block.
- This will add the gallery block to the page. Customize the block using the settings form available at the right hand side of the page.
- Finally, save the page.