Any real skyblock servers? [Wanted] [Vanilla] …

Any real skyblock servers? [Wanted] [Vanilla] {1.13.2} {Skyblock}

Im trying to find a server with real skyblock. an L shaped piece of dirt over an endless void with ice and lava in a chest and some sand island with extra goodies about 100 blocks further away.

however, every “Skyblock” server i go to has some weird island with shops, a starter cow, economy, ranks, levels, ect. What is an address to a real skyblock server?

Why is it so hard to find this?

Im not looking for “Make your own server” or “Do single player”