Newsletter Signup Plugin

Hello,

I recently developed my first WordPress website and I want to add a plugin/widget to the footer of the website which will allow me to gather email addresses and names for a newsletter campaign. I specifically want to add it to the footer. The website is https://www.futurehomes.ie. I want to add the same signup widget as the ‘Monthly Newsletter’ form at the bottom of https://themeforest.net/. I know that is a Magento platform but you get the idea.

Any advice would be greatly appreciated.

Thank you