This is only my opinion but no one or nothing is coming here to visit without making their (or it’s) presence known. I have no doubt that the Galaxy and all galaxies are teeming with life, some of it intelligent and even technologically advanced but the distances involved just make travel ala Star Trek just too unlikely.
Again, just my opinion.
If a UFO is identified, does it become an FO?
And if it lands, does it become just an O?
Yes... In fact I do Satellite Archaeology as a hobby and have found and documented quite a few that were captured by imaging satellites as they passed over an area. South America especially has a lot of these captures that can be seen with Google Earth.
Why on Earth - ahem - would they make it easier to find themselves to benefit us peons?
Broadcast the universal alien call signal “Gak!” on all frequencies and they will home in on that beacon. Their flying saucer pilots like anchovy pizza, so have a lot of that on hand as a welcoming gesture.