Even though NIP-05 services are cheap & convenient, I highly recommend to do it using **your own domain** to prove your authenticity. I've just made a quick tutorial how to do it easily & for FREE (except domain cost): https://blogstack.io/naddr1qqyx2dpn8ymnwvpjqyv8wumn8ghj7un9d3shjtnndehhyapwwdhkx6tpdspzpdqvewzz9c6tmaaw0wjydkxu74g8hjyaqamjpjuhxdl02h38dpg9qvzqqqr4gutqlr0g