Check out the faded /Cloudy ring around my iMac screen. Please help me, why is this happening? What should I do now?

Hi,

I think your iMac has hardware related issue, try to contact Apple Support or Apple Authorized Service Provider to tell them the circumstance you face with now.

Official Apple Support

Find Locations- Apple

Many had this problem due to seals around the edge of the display leaking, then I also just read...

https://www.youtube.com/watch?v=setyHZ6xPn4

Hi,

That's why I suggested contact Apple Support or AASP. It may be graphic driver's bug.

"@BDAqua What you've given me is not for iOS. I'm facing issues with my iMac. Please help me."

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iOS is not the OS for your Mac; macOS is the OS for your Mac. They are not the same; you list your OS as macOS 13.2 Ventura.