What is it that stops all matter from turning into a black hole

What's stopping a basketball from collapsing in on itself?

Pretty much everything was stated. Pressure stops the basketball from becoming a black hole. The atoms inside the basketball have a repelling force that is far more powerful than gravity. But lets look at stars now. The sun is in a constant battle between collapsing on itself and pressure. Gravity is so intense that it overcomes the repelling forces of atoms and fuses them together, this causes a huge energy release and creates pressure that fights against the collapse. With a star more massive than the sun, once the materials for fusion run out, there is nothing providing pressure to fight against a gravitational collapse, and then you have a black hole forming.

Gravity isn't that strong. The molecules in your basketball repel each other with enough force to counteract the force of gravity, which in something as small as a basketball is miniscule.

But the force of gravity is cumulative. Get enough matter together in one spot and it will become strong enough to overcome the tendency of molecules to repel each other, strong enough to crush atoms together despite their internal forces, strong enough to over every natural force that tries to counteract it.

This is why black holes are thought to consist of literal points, infinitely small, yet containing unimaginable amounts of stuff. Nobody really understands what that means.

The electronic repulsion between the positively charged protons in the nucleus and the negatively charged electrons mostly.

In a proper black hole there is so much gravity that those forces are overcome and the electrons collapse into the protons.

Gravity directly depends on mass, a black hole has a very large mass, hence enough gravity.
A basketball has barely any mass, hence not enough gravity.

The fact that black holes do not exist?