One of the recommended plugins that you installed is Contact Form 7. To create a new form Navigate to Contact->Add New. Once you’ve created a form, you can add the supplied shortcode directly to the content of a page or to a Page Builder Text widget.
Note: If you end up using the contact forms that are part of the demo content, make sure that you change the “to:” address to your own. Navigate to Contact->Contact Forms. Then select the form to edit and click on the Mail tab. There you will find the “to: field.
Contact Form 7 documentation: