The Volvo pulls to the right

Hello parish a question in the round. My car pulls to the right while driving straight ahead. I can’t really explain it to me. The track the shock absorbers the air of course the dome bearings the stabilizers the crossbars… maybe one of you has an idea and knows this phenomenon. It doesn’t always occur but so 70% sometimes I think it’s on the road surface. But I rejected that again because I don’t always understand. Thanks for your ideas and the exchange greeting André