HDR issues

[Nanachi]

Hello, I recently installed Jellyfin and wanted to take a look at it. Now I have the problem on my PC that the movies with HDR are pale and too dark. I have already activated tone mapping without anything changing. When I watch movies on my tablet, it works without any problems.
My PC runs Linux Manjaro and the tablet has Android. The Jellyfin server is currently running normally on my desktop PC for testing purposes.
Do I need to adjust any settings?