To add forms on your pages, first, create them in the Contact Form 7 plugin.
1. Go to Contact => Contact Forms
2. To insert the form into a page use CF7 Shortcode. Copy shortcode of the form you want to display.
3. Create HTML element in Elementor visual builder on the page.
4. Put the shortcode copied above to this field
5. Click on Update
You will get this form on a page. The contact form like the form on the Contact page has the same way to display it, simply copy the shortcode and put it in the same way.