If you jump on Earth, you do not fall towards a black hole because the gravitational force you experience from the black hole is significantly weaker than the gravitational force from Earth. The strength of gravity depends on both the mass of the object and the distance between you and the object.
While black holes have immense gravitational pull due to their extreme mass, their gravitational influence is localized to their immediate vicinity. Unless you are very close to a black hole, the gravitational force you experience from it is negligible compared to the gravitational force from Earth.
The gravitational force on Earth is determined by the mass of the Earth, which is about 5.97 x 10^24 kilograms. The gravitational force exerted by a black hole would depend on its mass, but for comparison, let's consider a stellar-mass black hole with a mass of about 10 times that of the Sun (approximately 2 x 10^31 kilograms). Even if such a black hole were nearby, its gravitational force on you would still be much weaker than that of Earth due to the tremendous distance between you and the black hole.
In everyday situations on Earth, the gravitational force from the black hole is essentially negligible, and the gravitational force from Earth is the dominant force that keeps you firmly on the ground. Jumping or moving around on Earth does not result in falling toward a black hole because the gravitational force from Earth far outweighs any influence from distant black holes.