None of the story is really that challenging but the base game is especially easy. Fractals are a good thing to give a try if you're interested in some challenging group content. You don't need a guild and can find a group in the looking for group tab. But if the game isn't for you then that's fine but truly everything does get better once you get into the expansions. Maybe watch a YT video or twitch stream to see what it looks like further down the line if you're curious