As I understand it, during a gravitational collapse, the star stops fusion and gravity overcomes the radiation pressure. At that point, there is a point in space where there is a lot of gravity in a small amount of space which leads to the formation of a black hole? My question is that, right before the formation of the black hole, if there is a "designated" spot in space where the gravity is highest and is where the black hole forms. If so, what happens at the atomic level at that specific spot right before the formation? What specific action of a particle(s) produces a black hole? Is this process the same if the formation is not due to a gravitational collapse of a high mass star (for example a high-energy collision)?