Lemmy simply hasn't been enough content. I still use Lemmy (obviously, I'm here) but I also supplement with other places.
For example, I used to enjoy the sub for one of my favorite sports teams. A lot of posts tended to be articles from the same handful of news outlets. Now instead of reading through Reddit I just have that website up and routinely check for new articles.
I use the Google News app occasionally. It usually sucks.
I also use Instagram a lot more. I only reluctantly downloaded it and created an account because my wife and a few friends wanted to send me things. Then I used it more when my band released an EP as a way to promote that. For pure entertainment rather than informational purposes, I usually go to Lemmy first and exhaust what is good quickly, then go to Instagram after.
I know it sucks. I don't like having an app from Meta on my phone. I know it can become an unhealthy habit. But I also drink and eat junk food, so there you go.