Possession

Should I just watch a movie breakdown video cuz I still don't understand what this fucking movie is about, like so far my interpretation of it is that the creature/clone or wtv is just an amalgamation of all the men she killed that somehow turned into a Mark's clone, which could symbolize like the search for the "perfect partner", idek atp, I'm just saying stuff.  Great movie tho, Isabelle Adjani gives an insane perfomance in this 😭