Closest Loot Box

you are playing a pubg game. You are somewhere on the map, and there are lootboxes spread over the map. Given the position of all the loot boxes and your current position, find the closest lootbox to you in terms of Manhattan distance. That is, you can move around forward, backwards, left, and right, but not diagonally. If there are multiple possible closest lootboxes, return any of them. For ex