Looks like I already have no options to try, apart of DVMT (which is not an option now, it is better to sell the laptop and buy a used Macbook for around the same price). Especially when even Linux works out of the box.
Only to buy USB-C to HDMI cable and hope for a better OS support for USB-C and DP ports for external displays.
Or find macOS version where the picture looks ok on 1080p. For some reason it is Big Sur now.
I am thinking about trying Catalina and Mojave
))
Who knows, maybe I will make it work their, or, try Clover instead.
Thank you for your answers