So when I got this device I went to root it and found there's not very good documentation on what to do to get root and recovery installed so after many boot loops and reinstall of firmware here is what I did to gain root and TWRP and have a stable environment. You will need to use ADB & Fastboot commands please install either this :
https://forum.xda-developers.com/showthread.php?t=2317790 or
https://forum.xda-developers.com/showthread.php?t=2588979 or you can install from here:
https://developer.android.com/studio/releases/platform-tools. you will also need the Motorola drivers located here:
https://support.motorola.com/us/en/solution/MS88481. Once you have obtained these you can proceed with the bootloader unlock. I have the unlocked version of the Motorola G7 Power so I was able to fallow the sets here:
https://support.motorola.com/us/en/bootloader/unlockyourdeviceb. If you have a different variant I'm not sure if your able to unlock your bootloader please try and let me know in this thread. I AM NOT RESPONSIBLE IF YOU SCREW YOUR DEVICE UP OR FOR ANY DAMAGE TO YOUR DEVICE
Bootloader unlock steps:
1. On your device go to Settings and to System, Then About phone and click " Build Number " until you unlock developer options.
2. Back out one step and click the Advanced tab and then click " Developer Options ".
3. Once in developer options " OEM Unlocking " turn off " Automatic Updates " and enable "USB Debugging".
4. Once you have done USB Debugging open the start button type "CMD" and open a command prompt.
5. Once in command prompt type " adb devices " make sure you authorize the pc on the phone. then type in command prompt " adb reboot bootloader "
6. Once in bootloader type in command prompt " fastboot oem get_unlock_data " from here fallow the directions on the Motorola Bootloader Unlocking page:
https://support.motorola.com/us/en/bootloader/unlockyourdevice
7. Take the number given to you by Motorola and type in command prompt " fastboot oem unlock CODE FROM MOTO " then enter the same command again and your device will be bootloader unlocked.
TWRP & Magisk install:
This is where I found it to be difficult to get things right either I would bootloop or I wouldn't be able to unencrypt my sd card in TWRP so I couldn't read things right all sorts of dumb issues. All the files I used are attached so please let me know if this works as well as it did for me. Please download the TWRP .img file it was too large to attach:
https://dl.twrp.me/ocean/ Also make sure that your command prompt is in the directory of your stored files.
Here are a list of commands to get TWRP and install Root please be in bootloader mode to start this process.
1. fastboot boot twrp-3.3.1-2-ocean.img
2. In TWRP go to the wipe option and select the format and type " yes " once it has done that go back to the main TWRP page by hitting the home bottom and select Reboot and select Reboot Bootloader.
3. fastboot boot twrp-3.3.1-2-ocean.img
4. Once in TWRP adb push twrp-installer-3.3.1-2-ocean.zip /tmp/ then click install and navigate to the /tmp folder and install the TWRP .zip file
5. After you install TWRP do this : adb push Magisk-v20.1(20100).zip /tmp/ then navigate to your /tmp folder and install Magisk .zip file
6. After you install magisk you can reboot the system and let it sit it might loop once or twice but it will boot. I did the force encrypt disable with the attached zip file then i rebooted.
Also I found it best to do this with a fresh installed firmware that hasn't been booted yet I downloaded the firmware/ROM from here:
https://mirrors.lolinet.com/firmware/moto/ocean/official/RETUS/ here is a list of commands to copy and paste into command prompt please make sure your device is in bootloader/ fastboot mode.
fastboot oem fb_mode_set
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash dsp adspso.bin
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system_b system_b.img_sparsechunk.0
fastboot flash system_b system_b.img_sparsechunk.1
fastboot flash system_b system_b.img_sparsechunk.2
fastboot flash vendor vendor.img_sparsechunk.0
fastboot flash vendor vendor.img_sparsechunk.1
fastboot flash oem oem.img
fastboot flash oem_b oem_other.img
fastboot erase userdata
fastboot erase DDR
fastboot oem fb_mode_clear