Why Do Black Holes Have Different Kinds of Events?

Imagine a black hole as like a giant cosmic vacuum cleaner. Some black holes are quiet, just slowly sucking in things that get too close. But others are loud, they make a big mess when they eat something, and the whole space around them lights up. What causes this difference? Well, it all depends on how much stuff is going into the black hole at once. If it eats just one star quietly, everything is calm. But if it gobbles up a lot of stars or gas at once, the energy from that big meal makes a bright flash we can see from far away.