You can play LSO Caves & Cliffs by adding the server in the Minecraft launcher.
On Minecraft Bedrock Edition, open the Minecraft launcher or Minecraft app. Go to the “Servers” tab and press “Add Server.” Enter the LSO Caves & Cliffs IP Address play.lethalsurvival.onlinein the “Server Address” and the LSO Caves & Cliffs port 19132 in the “Port.” Then press “Save” and start playing.