No. Space is big. I mean REALLY big.
We also are only now starting to understand new means of communication that are generally not detectable to outsiders. Trust me, any advanced alien civilization is not using standard RF (radio frequency) communication. They most likely are using some form of “spooky action at a distance” quantum entanglement based communication or something even more advanced. So the answer to why we can’t hear them is we’re not advanced enough.
So the answer to why we can’t hear them is we’re not advanced enough.
= = = = = = = = = = = = = = = = = = = = = = = = = = = =
I read that on the restroom wall at Walmart too.