Iím an older player, recently returning and trying to get a few friends into playing.

When I try to load my starter decks I get a dialog about cards that are missing:

I really wish I could get ahold of a few decks to mess around with without spending a lot of time in the deck builder and reading about the meta.

Is there a way to recover these decks, or maybe some starter deck codes I could use now that we can import/export?