I hope you are well today and thank you for your question.
Could you please tell me how you are adding contact form on the front page of your site and share me your site URL where it’s displaying so that i can help you to achieve it?
Solution for this topic
It’s hard to use that contact form there.
Instead you can use this contact form 7 plugin https://wordpress.org/plugins/contact-form-7/ as described on the following page and use its shortcode either in the page content or in the Footer widgets.