As you see, White and Black has their own advantage, so when an attack was made in Black, thats an advantage for White
Here are the Differences Between Two Player's Advantages
1. White has The Highest Advantage because White starts first, and then Black
2. Black can defend their pieces because Black starts second, so they need to defend to avoid being vulnerable when attacked.
3, and Last. Both White and Black has a chance to win.
So, advantages are just the high chance of winning or topping a thing, game, or more.