You can play RealRaidz 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 RealRaidz IP Address Play.RealRaidz.usin the “Server Address” and the RealRaidz port 19132 in the “Port.” Then press “Save” and start playing.