You do realise they might be long dead by now? Although the prospect of extraterrestrials is more than fascinating.

obviously, you have not done any research

An early emerging ET species, for a very brief period during its development, would communicate with each-other with  unencrypted, open "radio- type" of communication.Shortly after,during their evolution, their communication would be indistinguishable from background irradiation.Indistinguishable from  "galactic-noise".( As an Earthly example- consider recent tests carried out by Chinese Satellites  nutrino signal transducers.) Why humans are still looking for signals with conventional satellite dishes puzzles me.

I think  that the search for signals with satellite dishes is a mere cover that  not even the radio astronomers who are working on it are aware of. And I think governments are aware of foreigners. There is a lot of information and also a lot of misinformation about this topic.
Personally I think that they have been here for a long time.

Excuse me if there is any spelling mistake, because I use a translator.