Can I create my own free domain by creating my own DNS server?

Question

Domain Name System

The whole question is right there. I won't write anything here.

Answer 1

Only if for a locale. For the internet, no. Zone owners will never know about your server and will not delegate requests to you

Answer 2

Is it possible to get a million dollars for free by printing banknotes on a printer? It's about the same case here.

Answer 3

you can
only see it will also be their own - who has this DNS of their
darknet registered, something like this is arranged

Answer 4

Buy yourself a second level domain and you can give away third level domains. For example, let's buy bbb.com, then you can give someone the domain my.bbb.com.