​Have a spare car – how do i generate income with private lending instead of turo

How do private companies offer cars for rentals, how do they handle insurance. I have a spare car with good gas milage that I can post on turo – but turo eats up a lot of profits.

There are so many people out there who would rent out their for dashers etc – i never understood how are they handling risk? How are rhey handling insurance? What happens if the car gets totalled!