Create an algorithm for suggesting profiles to follow, such as trending or recommended, there's no way around it, sooner or later this will be adopted.
You can find people on twitter easily, exploring subjects, there everyone is seen.
The user enters the application and is faced with a screen without any posts, it is discouraging, the first impression I had is that there was no one, until accessing the bubble that already exists here.
It's worth the law of effort, if it doesn't get many sats, maybe other users don't like the content or don't have money to support them, that's normal.
What should be done is to make it easier to recommend profiles, just hashtags I don't think is efficient.