There are 8 balls of the same size and appearance; in one of them there is a void using only weights

There are 8 balls of the same size and appearance; in one of them there is a void using only weights to determine the ball, which has a void. Use the balance no more than 2 times.

Set aside 2 balls and weigh the remaining 6 by dividing them in half. If the balls are the same, then the hollow ball is among the remaining two. It can be found by weighing the remaining balls.
If the weight of 6 balls turned out to be different, then you need to take 3 balls, which turned out to be lighter and weigh any 2 of them. If the mass is the same, then the hollow is the one that was not weighed. If the mass is different, then the hollow one is the one that is lighter.