Hi, please check out the tutorials below;

https://www.youtube.com/watch?v=x79q4zagKsE&ab_channel=ZEMEZ

https://crocoblock.com/knowledge-base/articles/how-to-add-an-effective-mailchimp-subscribe-form-to-elementor-using-jetelements-subscribe-widget/

Could you please add subscribe widget in the elementor > the form contains only two elements: a field where one can input an email and the “Subscribe” button. Take a look at the Content > Field menu tab.
In the Settings section, you can set up the URL for redirection and enable usage of Target Audience ID of your MailChimp list.
Don’t forget to click the “Publish” or “Update” button at the bottom of the page to save the changes.

You need to buy elementor pro for the full feature.
You can get more information here.
https://elementor.com/pro/

Cheers.