Freddie's actions seem to center around his history with women, and I have not seen this noted anywhere. Lining up what we learn about Freddie and women in a linear history we see that Freddie has a Mom in a mental institute and is brought up by an Aunt who is much older but treats him as a sex object. His one affection to a female is to a 16 year old while he appears to be some ten years older. She wants to go on an European trip which Freddy first tells her not to leave on, but then decides to join the navy and let her go on with her life. Is this a recognition of his limitation as a man to allow her a normal life?
Early we see Freddy exposed to the naked woman on the beach, the woman of sand whom he pretends to have sex with an expression of aggression. He walks away past a sailor masturbating into the ocean (ocean often a symbol of the living of life). At the party, he views the women all as sex objects as shown by his seeing them nude. He relates to those women he contacts at the Cause only sexually. He leaves the Cause to find his 16 year old, but she is gone. He returns for a final farewell to the Master. At the end of the movie he is tucked under the arm of the same woman of sand seen in the earlier scene before he met the Master.
I see this movie a story of a flawed Freddy trying to bury his pain of difference, a difference he recognizes early but hopes to change when he meets the Master. He faces his failure to change by the time he drives away on the motorcycle, then finally drifts back to the woman of sand, away from the rest of the world, after a final goodbye to the Master. Note that flash towards the end of Freddy in a helmet with the ocean behind him, the helmet (alcohol, aggression) trying to protect him from the life he is experiencing, that grimace on his face.