we have not sent a probe into a black hole. Black holes are extremely dense objects with a gravitational pull so strong that nothing, including light, can escape their event horizon—the boundary beyond which no information can be received.
Due to the extreme conditions near black holes, such as intense gravitational forces and intense radiation, it is currently not technologically feasible to send a probe directly into a black hole. The immense gravitational forces would crush any conventional spacecraft, and the intense radiation and gravitational tidal forces would pose significant challenges for any equipment or living organisms.
However, scientists have studied black holes indirectly through observations of their effects on surrounding matter and the environment. They use telescopes and other instruments to observe the behavior of matter falling into black holes, the emission of X-rays and other radiation, and the influence of black holes on their surrounding galaxies. These observations have provided valuable insights into the properties and behavior of black holes, even though direct exploration of their interiors is not currently possible.