Hi,
Add the contact form 7 plugin from the Plugins -> Add New. Serch the contact form 7, install it and activate it. Once it is activated it will show you the “contact” at the left sidebar bar navigation panel.
From there you can create your own form. After creating the form publish it. Copy the shortcode that is present at the top. And add the shortcode to the “Contact page” you have created.
Your form will appear on the contact page.
If you need any help regarding creating the form you can contact us or you can also check the documentation of contact form 7 here https://contactform7.com/docs/
Thanks