[Help Needed] Who is the perpetrator? I am also curious about the fault ratio [No insults allowed]

Title: A woman turned left, then suddenly swerved back right and hit the rear of my car, but they say I am the perpetrator.

Hello. I am posting this along with my dashcam footage because I would like to ask for your opinions regarding fault in this accident.
While I was on my way grocery shopping with my girlfriend, I was driving behind the car in front of me on a road where lane markings were not drawn.
The woman in the car ahead turned left toward a residential area, and I continued straight in my original direction. At the time, my speed was around 20–30 km/h, which was within the speed limit.
However, the woman who had turned left suddenly swerved back to the right, entered my path, and collided with the area near the rear driver-side wheel of my vehicle.
Immediately after the accident, the woman got out, apologized, and asked if I was okay. Considering the circumstances of the accident and the point of impact, I believed I was the victim.
However, after the insurance companies negotiated the fault, I received notice stating that I am the perpetrator and the woman is the victim. The case has now been referred to the Dispute Resolution Committee, and I have also reported the accident to the police and am awaiting the results.
I will also tell you what happened when I visited the police station. The officer in charge spoke to the woman on the phone right in front of me, informing her that the Palisade owner had come to report the accident and instructing her to visit for an investigation.
In response, the woman said over the phone, something to the effect of, "The other vehicle was speeding and hit my car, and since I turned in with my turn signal on, I am the victim. I don't even know why the other party reported it."
(If you watch the video, she did not use her turn signal)
This is the claim I heard directly from her while standing next to her. It was different from the circumstances of the accident as I remember them, and I was bewildered and angry because the same person who apologized immediately after the accident was now saying such things.
What I am curious about is as follows:
What is the reason I could be judged as the perpetrator in this kind of accident?
What part of my driving could be considered negligent?
I might be judging this only from my own perspective, so please watch the video and provide an objective opinion. I would appreciate it if you could let me know if there is anything I have missed.

There is no way the car in front would have turned left for no reason; it looks like she tried to go that way and caused the accident [I did not upload the video because the other party's phone number is visible].
In the comments, people are saying the dashcam shows me as the perpetrator, so I'm leaving.