The advice everyone gives about how to deal with a bully is wrong. There. I said it. Someone had to. To get a bully to stop you need to remove their reward. You don’t do that by ignoring them.
Yielding is strategic, not just for bullying, but for any negative interaction really. Even if you are just yielding to get away, you are still using yielding strategically. Yielding is not a sign of weakness, it’s a sign of intelligence and strength. Use it wisely.