Aperture and shutter speed

As my old camera broke , I decided to buy a bridge camera instead to a regular digital camera. I went for a Pentax X5 Bridge Camera. During the last week i have played about with the shutter speed and aperture and here is what i got:

I set the aperture on F3.1 for all three photos as it was quite dark outside, so the lighting wasn't very good.

1/5 F3.1. 

This photos was very bright as the shutter speed is low. I quite like the photo as it brings out the colours of the lettuces and the snow.

                                                                        1/20 F3.1
This would probably be the picture that the camera would take if the camera was set on manual.

1/160 F3.1

I dislike this photo as I thought the shutter speed was too high so it made the picture dark and unclear.