Are there any ready animated characters, trees and so on?

Hello,
Here is a free program for creating 3d characters (for example icloned, autodesk character generator, etc.).
But I would like to know about services, or simply sites with files of pre-made animations of gait, jump and others.

I came across this article "https://habr.com/post/373431/" and if someone know anything about animation in directx then please explain the teapot