Good resource

First

You can own domain name for free if someone doesn’t register. But just one year.

Next time, I will write a tutorial about how to build a bot to auto-renew the contract.

you will type detailed info, and you will recive email. Now you have own domain name la.

Second

Go to Cloudflare

To register a account

Here, You need Type your domain name.

Then you must change Nameserver urls.

copy urls.

past urls at freenom.

Three

Now you can managed your DNS la.