There is no "Steve death video" because Steve is not a real person. He is the default player character in Minecraft—the iconic blue-shirted, dark-haired avatar millions of players embody in Mojang's sandbox game.
The confusion may stem from:
In Minecraft, Steve (and Alex, the female-presenting default) respawns infinitely unless in Hardcore mode. They are digital constructs—no biography, no mortality, no death video.
If you're looking for content about a specific Minecraft creator's "death" video, search their channel name + "hardcore death" or "final episode." If you're concerned about a real person, please clarify the context.