How to disable Global Protect VPN auto start on macOS?

I have recently had to start using Global Protect VPN on my Mac. It has a dark pattern of auto-loading on startup in a very intrusive way (popping up VPN login window). Meanwhile it isn't even listed in "Login items", making it impossible to disable from there. To top it off, Global Protect starts up immediately after I kill the process. I want it to _only_ start when I ask it to, and be able to kill it again after I no longer need it. How can I tame this undesired start and continually running application on macOS?