Problem with Iphone Footage in Premiere Pro

Hi, I have a problem with video footage from an iphone in Premier Pro. The color space from the Iphone is probably something like 2100 HLG. My settings: Color space: Rec. 2100 HLG
Override color space: Rec. 2020.
Anyway, that's how it was explained several times in tutorials, unfortunately the footage still looks too bright and a bit weird. Better than REC 709 but still not good.
Does anyone have any ideas?