On the main game page, you need to select the experience mode first. Only in the [Online] mode can you invite friends to play together.
After clicking [Online] mode, you will enter an interface where you can invite friends or match teams. First, select the character you want to start the game with.
After selecting your character, you can choose to match a team or invite your friends to join the game. If you successfully invite your friends, you can go on adventures together.
Hope this information is helpful! If you have additional questions or need further explanation, please feel free to ask.