I dreamed that my liver was taken out, probably because the liver was uncomfortable and I didn't feel much at ordinary times. When sleeping, the subconscious will exaggerate some feelings of the body. If your liver is uncomfortable, you may dream that it was dissected and your liver was taken out. Do you usually drink or like spicy food? It is suggested to adjust diet, go to bed early and get up early, eat less spicy food and don't drink.
The second dream is that the car was stolen. The car is the link between school and home. If you lose your car, you don't want to go to school or go home. Recently, will either of these two parties put more pressure on you and make you feel resistant before dreaming of losing your car? Then I found it at home and turned it over. I think maybe it's a little too much pressure at home. Going home is a way to vent, and finally finding it at home is a compromise to the family.
In the third dream, swimming is usually a way to relax. I was nervous twice in my dream. Maybe your subconscious wants to relax, too, but instead of relaxing, I'm nervous again. I dreamed that my acquaintance's father told him about the river, which was also one of the ways to find vent.
I think the landlord is under too much pressure, and all three dreams have obvious pressure. Are you facing the problem of finding a job soon after graduation? Relax and adjust your schedule. Nightmares may be less.
Pure speculation. I'm sorry I didn't answer many questions.