No, you need something releasing a lot of energy in the middle of a star, otherwise it collapses down on itself and stops being a star, the event horizon doesn'

No, you need something releasing a lot of energy in the middle of a star, otherwise it collapses down on itself and stops being a star, the event horizon doesn't provide any supporting pressure. Also, the process that compresses matter to the point it collapses to a black hole is very destructive; there is no reasonable way to form a black hole in the middle of the star.