When landing, the plane does not reach the landing point

Hi all! I can’t figure out what parameters to tweak so that there is an even glide path. The aircraft weighs 23kg, wingspan 3.6m. each attempt to adjust the parameters may end in a crash, so there is no particular opportunity to experiment. It usually does not fly 130-160m to the landing point. When landing, there is a very sharp decline over 180 meters, and the flight is at low altitude. A rangefinder is installed on board for a better fit, but I can’t figure out what parameters I should fix, because in manual mode I land it perfectly.