This is very funny, that you get the body according to your karma, but the, you are liable to enjoy or being suffering according to the body. The body is given by the nature. In another place it is confirmed, bhrāmayan sarva-bhūtāni yantrārūḍhāni māyayā (BG 18.61).
The living entity... Just like we, on this jeep car, we can move from here and there. Somebody has given you the car for movement. Similarly we are getting a yantra, a moving instrument, this body, with senses, different bodies. So I'm seated there and, but the movement is not in my direction. That is by nature's own way.