JS call mb_frontend_form shortcode

Hi

I want to load the mb_frontend_form using the fetch API. I can call the form successfully but the form does not include the necessary JS/CSS files. So just the form html loads. Any ideas why? or even if its is possible?

example.php

define( 'WP_USE_THEMES', false );
require_once( '../../../../../../wp-load.php' );
echo do_shortcode('[mb_frontend_form id="dc-product" submit_button="Update" ajax="true"]');

then in my themes js file...

<script>
    let container = document.getElementById('content');
    
    const testform = async () => 
    {
        const url = 'http://192.168.0.14/freestuffgroup/wp-content/plugins/drip-create-plugin/includes/functions/custom-scripts/metabox-form-query.php?rwmb_frontend_field_post_id=339';
        
        fetch(url,{
            method: 'GET'
        })
        .then(response => {
            if (response.ok) {
                return response.text();
            } 
        })
        .then(data => { 
                container.innerHTML += data; 
            }
        })
    };
    
    testform();
</script>