for me qbitorrent works without any issues on docker, what is the problem with it ?
I'm looking at it daily for .. erm 5 minutes? If you use gui like flood, that will consume more resources for few bells and whistles - it's a waste in my eyes.
Be more specific what does not work, what is your env (OS, etc etc).
Ouch , arch is not my area of expertise.
I could help with Debian installation or in docker.