If There Are Aliens, Should We Have Heard From Them?

Proxima centaris is a nearby star with two planets that we've discovered around it. It's only four light years away, which means if they knew that we are here, it wouldn't take very long for them to send us a message back. Al i tea as solute like if there is already somebody there, maybe your future inlaws. You never know. Emean, life takes interesting turns sometimes. If they could be future inlaws, how would they find us? I guess it's a fun question, because we don't know where the aliens might be.