How do you grow a Reddit community by actually solving people’s problems instead of just posting content?

I’m starting a new Reddit community, but I don’t want it to become another dead place where people only drop links or random posts.

I want to build it around real problems people have, answer them fast, and make members feel like they actually get help there.

For people who have grown a subreddit or joined one early:

What makes you trust a new community enough to post your problem there?

Is it fast replies, expert answers, friendly mods, daily questions, useful guides, personal experience, or seeing that other people are being helped?

If you were growing a Reddit community from zero, what would you do first to make people feel: