Drag the cube/object in scene
Choose Fracture mode
Click new, create geometry collection
Choose unifrom, and play around the values
Test the explosion with explode amount value
Choose the Outliner, the instance in the details,
Set damage threshold all index to 1 (lower index make it easier to break)
Untick show bone color in General (optional)
Set the BP, name as BP_Explosion
If for nigara particle system, spawn system at location instead of emitter at the end node