Hello guys! Can someone explain me how to setup my own nameservers for domains that doesn’t support DNS Zones? I’ve been adding websites to my hestia using A records of the domains but now i have a new domain without DNS editor so i need NS1 and NS2. For the moment i added NS records to the domain of the server. As far as i know i have to create a new Package on hestia but don’t know how to properly configure it, thanks!
Please have a look in the existing threads, it should give you enough informations to answer your question: https://forum.hestiacp.com/search?context=topic&context_id=1738&q=dns%20cluster&skip_context=true
Can i acomplish this with only one server?
Basicly, yes, should you do it according to RFC, no 
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DNS topology is straight forward. With one DNS server you can serve as much domains as you like.
Do you know how to accomplish setting up DNS?
Yes, only registrars I know that do all by the book are German registrars, but if you have 2 subnets you can circumvent RFC recommendation (at least 2 nameservers with 2 IPs in different subnets).