To play a private match with your friend, you can use any of the following methods:

1. Invite through the Game Lobby:
   
   • From the main screen, tap the game you want to play to enter its lobby
   • Tap “Battle With Friends” to create a room
   • Select your friend from the list and send an invite
2. Invite via Chat:
   
   • Open your chat with your friend
   • Tap the “+” button, then select “Game” to send an invite
3. Join a Game Room Together via Group Chat:
   
   • Create or join a game room through a group chat
   • Have your friend join the same room before starting the match

Using any of these methods will ensure you’re matched with your friend rather than random players.