Dull colours after removing DV

[Satya]

im a newbie to video formats, almost all new releases are including DV with HDR nowadays, the problem is, my display only supports HDR and for some reason, these versions are very very dim in colour, so i followed a thread and removed Dolby vision, with dovi scripts, but then even tho the metadata is removed and only hdr 10 is present, the colours are still exactly the same, dull and unwatchable, how do i fix it?

please help me as soon as possible, it's been months without any progress in it.

attached an image to refer