Do raids have matchmaking?

Bungie Explains Why Some Non-Raid Destiny 2 Activities Dont Have Matchmaking. In fact, most of the more difficult activities such as Raids and Nightfall Strikes are notoriously limited to premade fireteams, forcing solo players to venture outside of the game to find other players to join.

Is the Leviathan raid being vaulted?

Come November 10, 2020, the Raids Leviathan, Eater of Worlds, Spire of Stars, Crown of Sorrow, and Scourge of the Past will no longer be available to play.