Huawei got it's own built-in cloud backup, but it's a bit small ( 5GB ) with the free version. Personal I would recommend you try out Huaweis free backup tool. If you don't already use it.
HUAWEI HiSuite is the official Android Smart Device Manager tool,HiSuite helps users to connect their HUAWEI smartphones and tablets to PC and perform various tasks.
consumer.huawei.com
Only con is that it's a bit slow on the App backup, but it works and I personal verified the backups on my own P20 Pro many times without any issues.
Firewall
Controls network activity of applications.
Filtering of external network traffic of applications, that are installed on a device, and system applications—according to a user choice (Wi-Fi, network) and configurable rules (according to IP addresses and/or ports, entire networks, address ranges);
Monitoring of current and already transferred traffic—with information on addresses/ports connected by applications and on incoming and outgoing traffic;