Is engagement and followers the goal though?
Let's be honest, I'd say most who ask about followers are wanting to be "influencers".
That's the fake and artificial path of the fiat socials.
Instead, I'd say the best path on Nostr is just to get to know real people.
Like you said, can be tough with all the nyms and such, but there's more opportunity to actually get to know each other here than elsewhere.
That's more fulfilling, in my opinion, than a follower count.