Invisibly; by trying to post in it and encourage others to do so. There is not much management to do with such a small community. The majority of regular users watch the All feed, so subscriptions are really just a way to bookmark the community to post in it or find it more easily. For smaller or new communities, expect it to be more like your personal blog as it is unlikely to be something others will post in regularly. The majority of communities that are hourly-active were made prior to the rexodus of June 2023, or within a few weeks thereafter.
Unless you're in a very controversial space, actively micromanaging a community is likely an issue with the mod not the community IMO. The admins take care of the majority of wack-a-mole nonsense here.
I really haven't had any issues on the two I mod, but they're pretty small communities. And honestly, at Lemmy's scale, if you're feeling the need to use tools, you're probably moderating too strictly, or you're moderating a massive community.
Are there any stats to suggest that? I don't mean in a "prove it or gtfo" kind of way but I maintain a community for the Pulsar text editor on lemmy.ml (back before it was cool /hipster) when there weren't really any other (popular) instances. We have no political ideology (as a group, not speaking for individuals within it) and it is meant to be a Fediverse alternative to our Subreddit for discussion and support. The last thing I want is for people to not have access to it because instances are blocking it or people are shying away from lemmy.ml in general.
I use Boost and it seems to be able to do at least most of the moderation actions needed, and it supports notifications. I think Summit, Connect, Sync, and Jerboa are also good but I haven't used them too much.