The Yugioh Discord Server Repository, as an extension of /r/Yugioh is a server that acts as a junction to other servers. It has links to well over 300 different Yugioh servers, primarily ones dedicated to each Archetype or Deck strategy found in the game. That means you can find help for any Deck you want. There's also options to apply to have your server listed here, with Rules pages explaining how to go about that. There are also opt-in channels for discussion such as to discuss new archetypes as they come out.