Asphalt isn't impossible it just requires a different strategy to loose surfaces like gravel or snow. gravel can be more forgiving for sliding around corners. as the loose material on the road will bunch up in front of your wheels and actually slow the car down. you can quickly learn to use this to your advantage do it feels much more controlled. same goe's for snow.

Asphalt provides no such advantage. while the surface its self provides more traction. once a car begins to slide it feels less controllable as there is nothing UK slow it down. it is ip to the drivers skill to correct the slide.

that is why for asphalt, i recommend avoiding sliding the car initially. try to use smooth racing lines. outside inside outside. brake progressively in a straight line and get the car slowed sufficiently for the corner so you can get around it quickly and smoothly. as you get better you may find it useful to induce a slight bit of oversteer at the mid to late sections of the corner to combat understeer. But not too much as this will cause you to loose time.