Yes. You can focus on PvP (Player vs Player) combat. It doesn't require much interaction with the story. You can just jump in and compete against other players, improving your skills and rankings.
You could try to focus on the side quests instead. They often have interesting characters and mini - stories that are not directly related to the main story. Sometimes, these can be more engaging and might change your overall view of the game's narrative.
Yes, it could be. 'Bairly' (presumably 'barely') implies that there is hardly a story in Guild Wars 2, which is a criticism of the game's narrative aspect.
There is indeed a main story in Guild Wars 2. It begins with your character's creation and their entry into the world of Tyria. As you level up, you'll encounter different story arcs that are related to the overall main plot. These story arcs often involve battles against different threats to the world, as well as uncovering the secrets of the land and its history. You'll also meet a wide range of characters, some of whom will become your allies in the fight against the various evils in the game world. The main story is designed to keep you engaged and interested as you explore more of what Guild Wars 2 has to offer.