HiDPI on MacOS Big Sur (w/ 34' LG 34GN850)

Need help, I can't enable the HiDPI through the terminal but I already wrote the command:

sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true

Then I restarted the system and then checked system preferences one more time to make sure the HiDPI was enabled, but it did not, SwitchResX shows the same results, but I still can't see the "HiDPI" mode in the list of resolutions. BetterDisplay also doesn't help.

MBP13 2020 8GB/512GB

MacOS Big Sur