How to Determine the Direction of a Bollinger Band Breakout?

After the Bollinger Bands narrow, significant market movements often occur, but how can we determine the direction?

My confusion:

1. After narrowing, will it break out upwards or downwards?
2. How to identify false breakouts?
3. Can we chase after a breakout?
4. Which indicators work best in conjunction?

Seeking guidance from experts!