I went over a lot of posts and downloaded around 15GB of Video calibration files.Avsforum has a dedicated calibration topic with extensive information and a lot of test patterns. Check it out.
I doubt you can do much about the clouding issue as it is individual TV dependent. My 65” pixelight also had serious clouding issues which are largely absent in my 75” VU.
But None of them are useful without color meter.
Is there anything I can do without a color meter? Please share links if you have any.