Can I use multiple pages and have more than one field per page?

Yes, you can use Classic form to create multiple fields per page and add a page break for multiple pages.

If you are creating a new form, please select the Classic template after clicking on Create Form.

And you can add a page break to create multiple pages.

If you wish to change the layout for already created form, please refer this guide: How-to-Change-the-Form-Layout