This is my list of films related to various aspects of the hippie counterculture. No obviously bad movies. Almost no hippie exploitation films. Only films that you could watch with pleasure if you like or are interested in this topic.
Addition.
If you are interested in this topic, I advise you to also look at the three lists on this site:
https://www.listchallenges.com/1968-a-year-of-revolution-and-reaction
https://www.listchallenges.com/videohounds-groovy-movies-far-out-films-of-the
https://www.listchallenges.com/50-far-out-films-about-hippie-subculture
And also take a look at my list related to "Once Upon a Time... in Hollywood." On the page of my published lists.