Downgrading Steam client version
Run steam with these launch options
-forcesteamupdate -forcepackagedownload -overridepackageurl https://archive.org/download/dec2022steam -exitsteam
and make steam.cfg file and paste this in file
BootStrapperInhibitAll=enable
BootStrapperForceSelfUpdate=disable
or assuming you installed steam in default path (C:\Program Files (x86)\Steam) you can skip previous steps and just run this in cmd
cd "C:\Program Files (x86)\Steam" && steam.exe -forcesteamupdate -forcepackagedownload -overridepackageurl https://archive.org/download/dec2022steam -exitsteam && curl -o steam.cfg https://yhn.fyi/assets/steam.cfg
After this add these launch options to Steam shortcut
-noreactlogin -no-browser -silent +open steam://open/minigameslist
Normal browser library and all browser features won’t work with -no-browser so use mini-library or remove no-browser if you need to do something that requires browser enabled
Some features work with no-browser some don’t (e.a. store page doesn’t work obv and on the other hand friends doesn’t work without no-browser)
If you don’t want to install old client (e.a. cs2 and tf2 has soft-block on old clients)
You can use Amit’s script, if you ONLY want “no-browser” like performance or Aetopia’s NoSteamWebHelper.