We are using Contact Form 7 plugin for this theme, It’s one of the best contact form plugins for WordPress.
You can use the default form that comes after installing this plugin or you can use or customize form like the demo.
Go to the Contact > Add New. Here you will see a default form code like the screenshot below.
Save the form, and go to the contact page(Edit With Elementor). Here, you will see the contact form element. Edit the element in the form select drop-down select the form that you created a few minutes before.