People think that a blackhole is a point of infinite mass and density, while that is true, It only applies to the singularity.

1. No "Sucking":

Black holes don't exert a special "sucking" force. Their gravity is simply the result of their mass and how they warp spacetime

2. Gravity's Effect:

A black hole's gravity, while strong, follows the same laws of gravity as any other massive object. It warps spacetime, but outside the event horizon, objects can still orbit or escape. 

3. Naked" Singularity:

Without the event horizon, the singularity at the black hole's center would be exposed, potentially leading to unpredictable consequences

So if you think about it the even horizon is like a boundary for the singularity stopping it from destroying, Ripping apart or creating a universe.

4. The blackhole has a disc of hot gas orbiting it at high speeds, some of it falls it while some doesn't.

People ask.

If black hole ha so much gravity why do they have to consume things to grow.

That's not fully true, The blackhole itself has infinite gravity at its center, Its event horizon, Reduces the gravitational effects to some extent.

It gathers mineral to grow in size rather than mass, it's mass remains the same that's why some things can orbit the black hole.