One way to to do this is to create a page/template somewhere and set the page for content in the template, that way you can simply include the template on any page, (modular or not) and it will render with the right content.
The manual states: Twig processing as well as page cache should be disabled to ensure the form is dynamically processed on the page and not statically cached and form handling can occur.
title: Page with Forms
process:
twig: true <-- typo??
cache_enable: false