Like, we’re destroying the one place we know is a sure bet on where we can prosper if we keep it healthy, but instead the world’s richest man is trying to expand to other planets while this one’s ability to sustain life is in jeopardy. IMO that makes us potentially a very stupid species compared to a species that doesn’t really care about meeting other aliens because they value the life on their own planet far more than we do.
At the relevant distances, it could be that sending a message that would arrive as anything that stands out above the background noise of the universe would probably require a mono-directional transmission directed at a specific target, which would require a lot of specific effort that a smart enough species may see as not worth the resources. Frankly, we’re smart enough to know there is alien life out there somewhere without needing to see it for ourselves, and until our planet is much healthier and our species less chaotic, what would be the point of trying to contact it?
What if it’s like us but worse?
And as others have mentioned, a smarter species would likely try to hide, maybe even trying to capture as much ambient RF leaving their planet as they can so we don’t find them by accident.