I can't seem to find beautiful models of humans in 3D. Here are some examples of what I am looking for. Where can I find models such as these?
Daz 3D. It is free. https://www.daz3d.com/
You can make some renders inside it or export the models to other aplications.
Another one is Makehuman http://www.makehumancommunity.org/content/downloads.html