Magisk Root Your Device

Installing Magisk will give you ROOT, a super powerful Systemless Interface,
Magisk Modules support.

Features of Magisk
1. Allow you to modify any system (vendor) without tampering the partitions.
2. Anything can be loaded with Magisk systemlessly.
3. Root your device with MagiskSU, based on phh's Superuser, which is based on CM Superuser.
4. MagiskSU Root Management, Upgrade Magisk, Manage MagiskHide lists
Manage, Upgrade, Download, Install Magisk Modules from the community driven online Magisk
5. Hide Magisk from detections Google SafetyNet, ebank system integrity checks, game tamper checks etc.
6. Allow any modifications to system properties, including read-only props.

7. Unlock partitions blocks to support remount to rw

How to Install Magisk

• If you already have Magisk installed, it is strongly recommended to upgrade directly via Magisk Manager
• Before proceed you must be on custom recovery.
• Reboot to a custom recovery and flash the flashable zip  Download Here
• Reboot to system, and check whether Magisk Manager is installed and the version matches the latest one in the OP
• If for some reason Magisk Manager isn't installed/upgraded automatically.
• please install/upgrade it manually.
• Via Magisk Manager (Only support v14.0+):
• This method does not need root, and also does not require a custom recovery.
• However, you MUST have a stock boot image dump beforehand, and you also have to be able to flash the patched boot image, either through fastboot/download mode or ODIN
• Install the latest Magisk Manager
• If you're planning to flash the patched boot image through ODIN, go to Settings > Update Settings > Patched Boot Output Format, and select .img.tar. For normal users leave it as the default .img
• Press Install > Install > Patch Boot Image File, and select your stock boot image file
• Magisk Manager will now patch your boot image, and store it in [Internal Storage]/MagiskManager/patched_boot.img[.tar]
• Copy the patched boot image to your PC. If you can't find it via MTP, you can pull the file with ADB:
• adb pull /sdcard/MagiskManager/patched_boot.img[.tar]
• Flash the patched boot image to your device and reboot. Here is the command if using fastboot:fastboot flash boot /path/to/patched_boot.img

credit https://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445