I can't find a single working online resource for 1.13.2
Even the ones that ask you to upload your level.dat still come out incorrect.
I made a copy of my survival world and went into spectator mode, and still could not find a single dungeon after searching hundreds of blocks. SO far, the only one i have is a spider spawner which dug into by accident at the start of the world.
Help? Is this a 1.13 bug where dungeons don't spawn often enough anymore? I need a skeleton spawener for a tree farm and it seems to to none existent.
You find them underground. They always are connected to a cave or other open space, you will never find them completely encased in random worldgen blocks completely disconnected from caves, strongholds, abandoned mineshafts, or whatever other underground structure you care to name (vanilla or modded).
Beyond this one rule, it's completely random. Probably based on seed, but otherwise there's no telling where you'll see them. In the past there have been dungeons spawning on top of dungeons and dungeons spawning just below the surface, but these situations may have been coded out of the game as the versions progressed.