FIRST CONTACT has already been made by world governments, especially US government.

👽Original contact was Roswell and the following trades/treaties between Zeta/Greys and the nacent Dark US Military. (MIL got advanced technology [transistors, cloning, zero grav] and they got US CITIZENS' DNA to create a hybrid Grey/Human since they were at DNA dead-end from cloning.)

👼Second contact was The Galactic Federation, a peaceful higher-dimensional (5th Dimensional and higher) collective of advanced races, some of them almost identical to humans (Nordics/Pleiadians).

The GF has been advising leaders to an end to the enslavement of Humanity, but mostly this advice has been ignored.

As overtures to government failed, the Galactic Federation began outreach to individual humans, telepathically and is in contact either directly or via shared comms with millions.

Blossom Goodchild and Sheldon Nidle are a couple of examples of well-known sharers of messages over many years.

Further, it has been shared that the Pleiadians have been nominated by the Galactic Federation to be the initial emissary race for future more direct in-person interactions with humans, since they are the most like us in appearance.

And it has also been shared that already a joint operation has been in play to help humans with clearing out some of the most dangerous Deep Underground Military Bunkers (DUMBS) and tunnels that were stocked with traps and all kinds of unspeakable nasties.

Supposedly the Pleiadian Delta Forces have worked alongside The US Marines (or similar forces) providing advanced technology support to complete this extraordinarily difficult and extremely dangerous job.