Oh, I just read you and I also left you a comment...🙂

It is very good that you have taken that approach, and that also through your own experiences you realized how complicated it is.

I really liked the fact that you took the time to leave them messages, that's something I sometimes do too, although as you said, it runs the risk of being reckless by asking them to at least Interact.
However, it is nice when you receive responses.

The important thing, in my opinion, is not to abandon this approach... as I said in the other answer: If you can't discover a gem, at least make the effort to highlight someone (obviously good) who hasn't been supported for weeks.