Need an Advice regarding a Next.JS Project

I am working on an E-commerce project using Next.JS. I want to use an open-source CMS i.e payload CMS (Content Management System) as a primary CMS. In Payload CMS, There is an E-Commerce Template which already has initialized Backend. I want to use that template. Template is using Payload Cloud which expires after 6 days of free trial. How can I self host Next.JS using payload CMS on a free cloud.

Thanks in advance.
Om Patel (A Full Stack Web Developer)