If you want to create a private world for friends, you must download the server software and run it on your PC. How To Join a Minecraft Server on PC (Java Edition)
: Look up a monitoring site like HotMC or Minecraft Server List to find a server address (e.g., play.example.com ).
: Go to Play > Servers tab. You can join "Featured Servers" directly or scroll down to Add Server to enter a custom IP and port (default is 19132).
: Most public servers require you to register your password in the chat when you first join by typing /register [password] [password] . How to Download and Host Your Own Server
: Go to Multiplayer > Add Server , paste the IP, and click Join Server .