Can't track footage properly motion tracking

Hello,

I have difficulties with this image sequence, I can get .50 or .40 average, a clean curve without high peaks or any floating trackers, I have used tracking solution on after effect and not the warp stabilizer that distort footage, so I assume my footage is exploitable.
But whatever I can do, the camera data will always be a mess then curve is clean and so is average error of .40.
Can someone show me how to do ?

https://drive.google.com/drive/folders/1yjTkWVj0uGHpFQIlxpfn3qIONxfKZqo6?usp=sharing

Alright I’ve solved my problem: adding mannually more marks and use tools to clean datas were removing too much datas, and when I checked the remaining trackers, the curve doesn’t show that they are sliding a little bit when passing the actress.
So instead I’ve added some markers that I mannually fixed in cutting messy pathes and did this for 30 minutes one per one and… It works ! With a .50 error av.