Unfortunately, community building is work, and it's work that users actually do on the bigger, corporate sites. Those community builders helped get those spaces going, helped make them appealing, and help trap users there. In smaller spaces like this, we need to be the community builders, not just the content consumers.

One thing I find really helps is to use something that doesn't look like the space you left. Lemmy looks an awful lot like Reddit, but it has themes, and even alternative web clients that can change the experience and make it feel like something new.

Lemmy also isn't the content and communities, it's just the website's server software. You can access... ugh... the "threadiverse"... from websites using other ActivityPub enabled servers. There's an ActivityPub Discourse plugin. nodeBB is adding ActivityPub support in its next version. Friendica and Hubzilla have group support, and work with Lemmy-hosted communities.

Find a new window on social media, and it might help you engage with it differently.

The other thing you can do is just niche down a bit here. Find a few active communities that you're interested in, and focus your attention on them. Lemmy is actually much, much more like classic forums, where communities or spheres of interest have their own website. The difference here is that you can actually look outside of those communities to interact with other forums, too. It works a a lot better if you treat it that way. Find your home, as it were, and branch out from there.

Unfortunately, the modern mental model of social media is the fire hose, not the node-and-spoke that is actually best supported by the technology.