Planets in the Milky Way

There are perhaps tens of billions of potentially habitable planets in the milky way alone. The farmy paradox extends not only to our galaxy, but it seems to the entire visible universe. We found that you can literally do this over billions of light eers, which means that this is also something aliens could have done. So if it's a bit weird that we haven't noticed any aliens spreading across the milkyway, now we need to take into account,. there are also millions or billions of galaxies where aliens could have come from, but we haven't shown up yet.