How to generate planes into a chunk?

Hi, I am trying to make a infinite terrain generator with using planes.
I would like my outcome to generate like this, but I am stuck at putting my mesh into a chunk and loading them based on player position.
Right now all I have is a quad. Could anyone lead me or tell me where to go next?
All I see is tutorials about chunks using cubes. I don’t need depth in my game.
and I am also trying to have that low-poly look to it too. Thanks.

You probably want to generate your own meshes. See something like this tutorial. It is essentially making your own Mesh to .mesh in MeshFilter.

Infinite terrain gen would involve a lot more algorithmic concepts. You can try a popular Perlin Noise one. Then split your world into chunks and add/remove as the player moves around.