Thanks for answering.
No, I don't see anything wrong with the picture. It's more knowing that I did a mistake and can't fix it.
And because of the global dimming issue with the 2018/19 OLEDs (especially with football), I consider selling the tv and I don't want to sell it with wrong values set in the service menu.
I just hoped there were someone who know how to reset a value to default, in this case "0".
BTW: I think/hope that H-PLL (Horizontal phase locked loop) is just a setting for analog video signal.