Last year I got myself a PineBook Pro to have a look into ARM-based devices and ARM development in general. Thanks to the optional NVMe adapter board I was able to add an SSD to the device as well. One of the first things I always do after receiving new hardware is to fully re-install the operating system, because you should never trust a default installation. I used the manjaro-arm-installer as Manjaro currently seems to provide the best support for the Rockchip hardware.
Unfortunately, the installer did not provide the type of installation that I wanted to have.