Apex domains cannot have CNAME records.
Question and response
Question
dig visitme.hu. NS
Answer
visitme.hu. 5 NS andy.ns.cloudflare.com.
visitme.hu. 5 NS arya.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
andy.ns.cloudflare.com. 2 A 108.162.193.101
andy.ns.cloudflare.com. 2 A 172.64.33.101
andy.ns.cloudflare.com. 2 A 173.245.59.101
arya.ns.cloudflare.com. 2 A 108.162.192.70
arya.ns.cloudflare.com. 2 A 172.64.32.70
arya.ns.cloudflare.com. 2 A 173.245.58.70
andy.ns.cloudflare.com. 2 AAAA 2606:4700:58:0:0:0:adf5:3b65
andy.ns.cloudflare.com. 2 AAAA 2803:f800:50:0:0:0:6ca2:c165
andy.ns.cloudflare.com. 2 AAAA 2a06:98c1:50:0:0:0:ac40:2165
arya.ns.cloudflare.com. 2 AAAA 2606:4700:50:0:0:0:adf5:3a46
arya.ns.cloudflare.com. 2 AAAA 2803:f800:50:0:0:0:6ca2:c046
arya.ns.cloudflare.com. 2 AAAA 2a06:98c1:50:0:0:0:ac40:2046
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0