[Nom1fan]

First don't use dsplayer but kodi's internal player. Play the file and manually tune the tone map parameter in the video osd, please.

 When you say not to use DSPlayer, do you mean I should use Kodi 17.6 or Kodi 18?

Since Kodi 17.6 doesn't support HDR from what I understand, and in Kodi 18 I already tried tuning the tone map parameter.
In "The Matrix" it doesn't help since the problem isn't just that it's dark. The colors are completely messed up. For example the colors of the light from the flashlight look blue and pixelated.