(sorry if this is the wrong place to post)
Just wanted to suggest a Manjaro arm openbox iso which would be awesome!
I have a example of my own setup and config and it works great on my pi 4 8gb also a lot more stable
If you are interested my repo is here https://gitlab.com/coreybruce/backup-openbox
and I did mention it on this post here: Horrible performance with 20.05 on RPi4