Millions of ETs scouring the Universe?

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I recently saw or read a quick passing note that there could be a sentient civilization somewhere in the cosmos, a species whose main existence lies in perusing the Universe either for knowledge or discovery of other species or life.
 
(The comment passed by me too fast to capture or pursue its source.)
 
Let’s assume I heard it correctly: millions of extraterrestrials have a purpose and that purpose is to seek out life elsewhere in the Universe.
 
Even if this speculation is possibly true, a million searchers or dis- coverers would be stretched to a considerable degree in its expe- ditions, since there are estimated to be billions upon billions of possible planets and moons open to possible sentient or just simple life forms.
 
This means, as I see it, that a possible search party or entities (maybe AI agents) that come upon our planet will only be one or a few, even if our vast life forms prove to be exciting to the home planet (or civilization).
 
I don’t see a vast armada of searchers descending upon Earth – as the scads of UFO sightings/reports imply.
 
Sure, there may be revisits – few in number – or more like a ship or two of interplanetary scientists sent our way but, still, nothing in the way of UFO numbers on record.
 
A planetary slew of “investigators” seems unlikely, to me, even if there were a curious lump of ETs hoping to see our planet. It doesn’t bespeak “advanced.”
 
And a species only existing to search for life elsewhere, without an end purpose – even one sparked by a need to escape a dying planet – seems unlikely to spend such a long time reconnoitering this planet, apparently without conclusion.
 
Yet, the ET mind is beyond comprehension by us, with what ap- pears to be no contact.
 
However, contact, if it has happened and remains cloaked in secrecy, may provide a reason for vast visits but, still, we – regular Earth citizens – remain in the dark, and our conjectures continue, themselves without conclusion.
 
It’s all almost sad.
 
RR