In 2019 the Pew Research Center published “Trust and Distrust in America,” based on a survey of 10,618 adults. Some 71% thought that trust between Americans had declined over the past twenty years.
Age made a large difference. Nearly half of adults under 30 (46%) were what Pew called low trusters, against 19% of adults 65 and older. Among those under 30, 71% said most people would try to take advantage of you if they got a chance.