Mac Manual Uninstall ?
sudo rm -rf <install_location1> <== can be tricky. Do not remove all subfolders. May need to remove one by one based on package.
sudo rm -rf <install_location2>
sudo rm -rf ~/.<packageName>
sudo pkgutil --forget <package name if any>
An example on how to remove anyconnect.
sudo rm -rf /opt/cisco/anyconnect/
sudo rm -rf /opt/cisco/vpn/
sudo rm -rf /opt/cisco/hostscan/
sudo rm -rf ~/.cisco/
sudo rm -rf ~/.anyconnect
sudo pkgutil --forget com.cisco.pkg.anyconnect.vpn