There are no aliens! Anywhere! Period!
Geez...
There are no radio signals from Tabby’s star, at least none detected.
But if your civilization is advanced enough to build a Dyson Sphere, maybe you’ve long since given up radio transmission as a communication method.
“There are no aliens! Anywhere! Period! Geez...”
There are over 200 billion suns in our galaxy, most of which are proving to have planets, and our galaxy is just one of countless billions of others.
It’s not even possible for most humans to wrap their minds around the vastness of our galaxy, let alone, the entire universe.
Simple logic dictates that the universe is teeming with life. We just have to grow up enough to find it.