What should I do if gta5 online mode is always sent messages crazily by robots?

You can re-enter the online mode, or you can enter the friend public online mode. Click ESC in the game, select Online, search for a new online mode again, or select an online mode that non-friends can't enter. "5" (Grand Theft Auto V is an open action adventure game with the theme of crime, released by Rockstar Games.