The system I am using is XFCE, apparantly this version of manjaro does not come with the proxy settings that we get to see in the KDE or Ubuntus. The etc/profile is for command line, I have read
https://forum.manjaro.org/t/how-can-i-do-wide-system-proxy-xfce/29976 thoroughly,
it inspires me some how, I don’t know whether it is possible or not to use the PAC like the typical ubuntu proxy.
I use a clash as the tunnel to connect to network, so that means the proxy is offering me a port on the local machine, like http → 7890, socks5 → 7891.
From the experience of the past using Ubuntu, I just need to take the proxy configuration and type the 7890 or 7891, then it’s all done, I don’t know how to do that in XFCE