Welcome, hope you find suitable material for your projects.
As a modeler, I had for some time a few free models, the idea was to try to introduce the prospective buyer to paid models.
With that said, I would like to make a side note, all the technology involved in producing 3D models and movies hides one basic fact.
For one can create impressive mountains of moving water, or gigantic explosions the size of a galaxy, simply by learning to use a certain program.
We assume that, within the 3d universe, where there is the possibility of developing hundreds of different professional activities, everything consists of that, in learning to master a program.
And this hides the basic fact that a 3D model is just a drawing, nothing more and nothing less, because it is impossible to model anything that is not primitive if you don't know how to draw.
If you don't know how to draw, it is impossible to learn to master a modeling program, you can take advantage of the simple and default modes that the program offers, and there are many people who do and sincerely believe that they can model.