Thanks! The player's collision box is used for both detecting enemy ant hits and collecting friendly ants. So I couldn't make it too small or too large. In the end, I went for somewhere in the middle :)
Yeah, I definitely see how using multiple box colliders for the player will be hard to fit in the 3 hours ^^ Maybe a quick workaround would have been to reduce the enemy collider and make the friendly one bigger (but maybe you did that already..)