About dns server

I want to create my own DNS addresses with any domain in freenom domain but it is not directed, I first defined ns1-ns2 IP address in the domain panel. Then I have defined ns1-ns2 IP addresses to the centos web panel, then added to the domain zone records from the web panel

ns1     14400   IN      A       server IP
ns2     14400   IN      A       server IP

but still not directed. Where am I doing wrong

Are glue records created? please test DNS from leafdns.com