Which client are you using? Have you fine-tuned your relays?

Damus (and I believe Amethyst) let you follow hashtags, which can definitely make it easier to find regular active users.

I follow 500+ plebs and it can still seem quiet at times. I’ve heard 1K+ follows is really the minimum for a robust feed, but it’s one way in which I’ve been a bit lazy so far.

Nostr also has busy & slow weeks, and (just like the wine industry!) it seems a little slower in summer. More people need to post about their boating accidents, I guess.