configure selfhosted email using cyberpanel and cloudflare

I need help if anyone would be so kind. I have an ubuntu server on prem with cyberpanel installed. I have a domain that is accessible on prem and externally utilizing cloudflare tunnels and cloudflare proxy. I am confused about what I need to do on cyberpanel. Everyone I see creates a website which is their domain for example juicyfruit.com. Then they create ns1.juicyfruit.com and ns2.juicyfruit.com. My name servers are hosted by cloudflare, my server is local. I do not know what I need to do to get my mail from cloudflare sent to my private email server (ubuntu server). If anyone can help me I would greatly appreciate it!