Finding free templates for Pages

Don't overlook the fact that you can create your own custom templates, adapt new templates from existing templates included with Pages, and use selected Microsoft Word templates that do not use visual basic, word macros, or have other Microsoft dependencies.

Create a custom template in Pages on Mac - Apple Support

There are a number of free templates included in Pages.

If you need something else, I would put "free templates Apple Pages <specify type of template>" into your favorite search engine.