There is an official Azure VPN client in the AUR:
$ pamac search azure vpn
microsoft-azure-vpn-client-bin 3.0.0-1 AUR
The official Azure VPN Client, supporting Entra ID and certificates
So theoretically it should be as easy as installing that:
pamac build microsoft-azure-vpn-client-bin
Hope this helps!
Edit:
a .deb
file or similar from Debian/Ubuntu shouldn’t bee installed blindly on Manjaro, like with debtap, even if it is possible. Instead, if there is no other choice, do it manually: