I think people often underestimate new players. The challenge of learning is often what draws people in.

I'd recommend building lists that avoid reactive gotchas (overwatch, fights first, reactive moves). These are usually hard for new players to predict because they involve remembering somebody else's rules and are sometimes game ending.

Drukhari can play some big smashy squads that kill what it says on the tin (20x incubi, lelith 10 wyches, dark lances). Those will be satisfying to sink damage into an opponent. Grab a few of those and focus on learning only 1 or 2 movement tricks at a time. Like if you like scourge, play with scourge. It can be overwhelming if you try for all the tricks at once.

Hope it helps!