It's a fantasy role-playing game.

DM: You are Nott the Brave, a goblin rogue . You are the member of the famous group of adventurers. Previously, With all the enemies handled, Molly douses the flames on the dead priest's head and calls Caleb out of his withdrawn state. The rest of the party searches the room for any valuables.
DM: If they don't know you're there, which this is currently what's considered an ambush round, you still have advantage on your first strike if they're not aware of your presence. Which means it would cancel out that disadvantage.
Player: I can take my shot from here.
DM: You can, yes.
Player: All right. I will fire.
DM: All right.
Player: Ooh! 17 plus a lot. Six! 17 plus six to hit.
DM: That hits. You do not get sneak attack on this because you do not have advantage on the strike.
Player: I thought you just said I had advantage!
DM: You had advantage, but you have disadvantage because they're beyond the--
