Elementor to custom wordpress page

You need to add the_content() to your code. Then, when you edit the page, elementor elements will be replaced with the_content(). So, the page template would be something similar to:

<?php
get_header();

if (have_posts()):
    while (have_posts()):
        the_post();
        the_content();
    endwhile;
else: ?>
<p>Sorry, nothing found here.</p>
<?php
endif;

get_footer();

?>