There are a couple of ways to get more images:
The Doodly Marketplace is a pay-per-bundle option where you can grab items as you need them. These are not included in the Standard or Enterprise license.
You can also import your own images.
Doodly: Where can I get more images?
Learn the three ways to get more images in Doodly — purchasing bundles from the Doodly Marketplace, importing your own custom images, or using free video templates.