By enabling this Elementor PRO Form Extension, you can find a new "Actions After Submit" called Message.
Add it to the "Add Action" multi-select, and the Message Section will appear.
The Message to Show
Message Type: select to visualize a standard simple Text Message or a graphical advanced message built with a Template;
Message Text: you can insert Dynamic Shortcodes to integrate the submitted values, like:
Thanks {form:name} to submit the form!;Floating message: to fix the message in a definite spot on the screen, not as the usual form;
Close button: add a simple button to the message on the left or right. This permits the user to hide the message;
Hide the form after the submission, once the message displays the relative form disappears.
Use an Elementor Template
To create a structured response message, you can use an Elementor Template, into which you can insert images, text, buttons, and many other Widgets.
To display the submitted data, use the Dynamic Shortcodes, like {form:field-name}.