Mac mini display color profile issue

Hi I have purchased Mac mini M4 so have connected to My monitor 4k dell u2718q basically I am a photographer and very serious editor I am very specific to the colours I have facing a problem with the colour profile in my monitor when I am trying to switch to RGB mode my display is getting pink Mac mini supporting to ypbpr colour I am not able to rectify the problem please help me regarding to this and I am using HDMI 2.1 cable I have tried using another monitor with the

same cable and different cable also but the problem is not solve please help me I need more help

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