No. Simply because of distance.
All of this alien nonsense does not take into account that the nearest star is four light years away. It is such a great distance that traveling at the fastest speed possible it would take at least 150 years each way to traverse. Other stars are many, many more light years. 40 light years would take 1,500 years to traverse, that is where the Trappist-1 system is which is the next best candidate for “Earth-size” planets to exist.
Traveling at light speed is impossible, both for us and for aliens. I’m sorry to say, it is unlikely we’ll ever know for sure if intelligent life exists elsewhere, and if it does, it is unlikely they will ever know we exist.