A healthy mix of high-level competitive decks and builds is better than just two or three.
Yorion was banned in Modern on October 2022: The main reasons given on the official announcement were that on paper large decks are harder to shuffle triggers take a lot of time to manage and these seem to be more important than balance reasons alone
This is because the current metagame prioritizes decks which set up their primary attackers quicklysomething that isnt possible with this deck simply because Charizard ex is a Stage 2 card
It genuinely takes some luck to determine how a battle will go, and that's all the more apparent with each match
For example, you could have a deck with Jarad's Orders and/or Buried Alive, and you could stock up to either pull stuff out of your 'yard with the Soul or to put the Soul there to yank out its friends
Now that you've learned the rules, found the colors you like, and learned a strategy that suits you, you probably want to move up to playing at a local game store (LGS) in your area