Team Win Recovery Project 3.x, or twrp3 for short, is a custom recovery built with ease of use and customization in mind. Its a fully touch driven user interface no more volume rocker or power buttons to mash. The GUI is also fully XML driven and completely theme-able. You can change just about every aspect of the look and feel.
SD card access
Not Working (Fixing Soon):
Backup to Data
Internal Storage Access
RS.1 - February 6 2021
As this device is quite locked down from the factory, the installation process is a bit long, but is easy once you get used to it.
You will need:
Unlock the bootloader first: https://androidforums.com/threads/how-to-unlock-the-bootloader-of-the-zte-avid-plus-z828.1324697/
ZTE (For providing me with the stock ROM after a month of E-Mails)