Plot; a group of 5 or 6 strangers whose lives are intertwined in a group therapy class to figure out why they’re all there. As the movie progresses the end result was a domino affect of accidents that kills them all. One is a woman in a glass bus shelter. Another is a man in his car bleedin on a Birthday gift for his Daughter. Please let me know the name if anyone can.
This vaguely sounds like the movie Identity . From 2003, a thriller/horror.
https://www.imdb.com/title/tt0309698/
Not sure if this is what you were looking for! There is no group therapy.