Parking accident! Question of guilt ?

Hello people ! Got a huge problem … Had a parking accident last week ! I turned into a road with a lot of traffic and ordered me from the beginning into the right lane and flashed also to the right to signal that I was looking for a parking lot … accordingly I also adapted my km/h ! Suddenly an older gentleman came backwards with his BMW from an exit / parking bay and still steered on the strip to the right, while he caught my a4 1.8 T hi. Right with his vo. L i. side ! So he came with his front side crooked on the road and walked me where I passed by ! A dodging was not possible, since it hit the rear part of my car. Police came and could not blame anyone ! The opponent pushes the guilt into my shoes ! Refuses the damage regulation ! The opponent was alone and I with my girlfriend in the car The opponent says from I have irritated in with my blinker ! My questions now ! Who meets the guilt ?