IKEv2 is easy to configure on your MacOS in a minute. It is also fast and secure. You may want to use IPSec IKEv2 if you have difficulties on your location connected to the Internet.
Click on 'System Preferences' then 'Network'.
Add new profile
Click on "+".
Select the "VPN" in dropdown menu as Interface and "IKEv2" as VPN Type. Enter service name you want and click on "Create".
You can find all available servers in the members area when you logged in and put the alternative server address as "Server Domain Name" and 'Server Domain Name' as "Remote ID:". Then click on "Authentication Settings…".
Enter your username and Password
Select "Username" as Authentication setting and enter your credentials.
Check "Show VPN status in menu bar" and click "Apply". To "Connect" will start VPN connection.