yugioh jack atlas deck list F2P Atlas' Red Dragon Archfiend Dec. 2020 Yu-Gi-Oh! (Jack Atlas) Red Demon

I believe the deck struggles against Gladiators, as they run Chariot to stop your monster effects, they can use Dimensional Prison to protect their monsters and then banish your zombies with Retiari

There are a few additional points it could have addressed within its scope such as demonstrating at least one trainer card, but on the whole it is a good introduction and there is other in-game guidance for concepts beyond those introduced in the mandatory tutorial

Reddit ($400/20 packs = 3 IR/1 TFA)

This is possible in a whole bunch of decks, most notably Cyber Dragons and Constellars themselves

Otherwise, the normal deck construction restrictions for the given format apply