If I were trying to get quiet aliens to communicate, I would try to get earthlings to clean up their own mess. I can’t imagine an advanced civilization wanting to bother with the sad tragedy of humanity’s self-destruction. There isn’t a day where some random human isn’t killing another, and there’s usually some government that has organized some mass-kill army operation against another country – or, worse, it’s own people. Even omitting the bloodthirsty, power-hungry, greedy, and liars, the general population can’t get together to work for the common good.
Maybe we could start by fixing the climate catastrophe, getting the trash out of the ocean, and then getting food and housing to everyone. If I was an alien that’d been avoiding Earth, that’s the sort of thing that would get my attention.