Nba 2k26 on OLED Gaming monitor

Hello, Anyone faced an issue with greyish colors on an OLED screen?? I recently switched from IPS to OLED screen ( ASUS 240hz) i thought im going to be very satisfied but mannnn… the colors are so grey, i tried switching HDR off it makes it less grey, but its still grey, the colors is like from 40s movie. Anyone had this issue before if so maybe you found a fix.. im so tempted to just plug back my old IPS monitor.