Notice the perfect "Q" shape formed by the blonde hair at 1:40 mark? Shown right after Joaoquin says "And I dont know what the fucks going on here"

I can buy the 'O' shape occurring randomly and naturally in that shot, but the separate strand of hair coming out and forming the tail in the 'Q' seems very deliberate.

Also found this in regards to him preparing for the role:

To prepare for the film, Phoenix spoke to ****Ty Ritter, a former bodyguard who goes on international military-style missions to rescue children suffering sexual exploitation and abuse by human traffickers. But Phoenix was reluctant to share what he learned from Ritter. At this point in the conversation, it became abundantly clear that Phoenix prefers to just do, rather than talk about doing

https://www.vanityfair.com/hollywood/2017/05/joaquin-phoenix-lynne-ramsay-you-were-never-really-here-cannes