You can use any plugins to create the form. In this example, i am using WP Forms plugin. Install & Activate WP Forms plugin first.
After activating WPForms, to create a new form, Go to your blog Dashboard > WP Forms > Add New. Select the template from the display.
Click EMBED button to embed it in a page.
After that just follow the direction from the plugin.
You can watch more detail explanation from their official youtube here :