Movie from eastern Europe about a witch that takes the bodies of people and lives as them. (I somehow found it after making this post)

Hello! A few years ago I saw this really good movie that I can't stop thinking about but I forgot the name and just can't find it no matter how much I try.
I'm pretty sure it's from Eastern Europe, non-English language, made kinda recently (within the last 10 years I think).
The movie starts with a mother and her toddler hundreds of years ago who live in a small hut in the forest who gets visited by a witch (I think it's some specific folklore being. She kinda looks like a burn victim, whole body is scar tissue when we see her at the beginning of the movie) then the movie jumps a few years and we see the now kid (the toddler from before) go into a cave and is stuck in there for some time.
I can't remember exactly what happened during and right after that.
But the movie then begins its actually story of this witch who kills people and then transforms into them, basically copies their physical bodies, and then goes on to live as them for several years. She lives for a long time and during the movie we see the different people, both male and female, who she lives as.
Every time she becomes someone new she has to relearn basic things so she can't talk or do simple tasks, almost like a toddler in an adult body for a while.
Her thoughts are narrated most of the time, often as whispering, and we see and listen as she explores things like sex, relationships, being these different people and as she learns to live their lives. It's very close and personal to her, we basically experience it through her mind but see her as these people in second and third person (not actually game-like third person perspective, just that we see her characters from a perspective outside those people). I think we do see through her eyes sometimes, but I'm not sure about that.

Does anyone know what movie it might be? Or have any tips on websites or ways to search to help me find it? Thanks!!

Edit: this is crazy, I found it right after making this post... So many hours trying to find it before with nothing even being close. It's "You Won't Be Alone": https://www.imdb.com/title/tt8296030/