how to configure BD for LG 24" QHD 2560x1440 with MacBook Air 2017

[rrsahoo]

I have a MBA 2017 with macOS Monterey 12.7, and I need help with configuring my LG 24" monitor to use HiDPI.
In the system preferences app, I see an option for 1280x720 HiDPI, that makes text quite large, although it looks like Retina display.
There's an option for 1980x1080 but it isn't HiDPI, and selecting it makes the text blurry.

As I understand reading some of the posts, for a QHD monitor with 24", 1980x1080 with HiDPI should be the target resolution. Please correct me if wrong.
Also I am a bit lost trying to locate how to enable it.
I had downloaded the trial version few days earlier, but in the absence of a proper how-to steps, I ended up uninstalling it.
Now, I want to give it another try, but it asks for buying Pro version.

• Do I really need to buy the Pro version for my purposes? All I need is for the text and everything to look sharp, and at the right size for readability. Just that. No brightness control or volume control or anything else. It's for personal use, and only a single monitor.
• Will I really get Retina display kind of text sharpness or is it something close to retina, but not there yet? This is important for me as I do a lot of reading.
• If yes to the above question, what should be the proper configuration settings ?

[waydabber]

Did you try configuring this?

https://github.com/waydabber/BetterDisplay/wiki/Fully-scalable-HiDPI-desktop

Let me know if this does not work for some reason.