ДТП при выезде с прилегающей дороги

NOTE: Please don’t leave Abusive/Insulting Comments. Mounted on a Chest Cam. This was a complete wipeout of me when I was already on the roundabout by a red P-Plater who just didn’t think. He appeared from nowhere as you can see on the video, didn’t stop and failed to give way taking me out in the process. What was he thinking? What was he doing that took his attention away from the road. I was clad in a yellow fluro high vis long sleeve jacket and wearing a yellow high vis reflective bag pack cover