it is not possible for humans to live on Jupiter or Saturn. Both Jupiter and Saturn are gas giants, composed mainly of hydrogen and helium, with no solid surface for humans to stand on. Their atmospheres are extremely harsh, with immense pressure, high temperatures, and toxic gases.
Jupiter, for instance, has a massive storm called the Great Red Spot, which is larger than Earth and has winds exceeding 400 mph (640 km/h). The temperature on Jupiter decreases as you go deeper into the atmosphere, but it can still be extremely hot at the upper layers due to the intense sunlight.
Saturn, while similar in composition to Jupiter, also lacks a solid surface and has a turbulent atmosphere.
As of now, no technology exists that would enable humans to live comfortably on or in the atmospheres of these gas giants. Even with advanced technology, the extreme conditions on these planets would make them extremely challenging and dangerous places to inhabit.
If humans are to colonize other celestial bodies, focus is currently on bodies with solid surfaces like Mars or moons with potentially habitable environments, such as some of the moons of Jupiter and Saturn, like Europa, Ganymede, and Enceladus, where there might be subsurface liquid water oceans and more reasonable conditions for potential colonization. However, even these locations would present significant challenges for human habitation and require advanced technologies to support human life.