The nether is a tough place to survive. There are dozens of ghasts shooting fireballs, magma springs bouncing around, pigmen waiting to back up their friends, and skeletons wandering fortresses.
To get to the nether take the ship found at /warp pirate cove in the Shipyard.
The nether is meant to be hard, and staff won’t help you find your stuff if you die. You also cannot set warps in this world, and staff members aren’t allowed to fly. The nether is periodically reset so if you build a survival shelter in the world, don’t keep your valuables in it for long.
Being able to survive in the nether is considered key preparation for joining the Darkness world.