I just use my toothbrush after cleaning the teeth with the leftover paste still on it. Works well for me and is also said to hinder the spread of viruses in some kind of manner, at least I think I read this on the news some time ago.
I also used the backside of the brush for this but my method seems more effective to me, I would like to see a study about this.
Buy something used. My Logitech mono still works after 25 years.
Join this community to get help setting things up on linux:
A place for all the niche of niche gamers to discuss and join other simracers!
Join the Simracing space here https://matrix.to/#/#simracing:matrix.org
You will likely get good infos about good cheap Linux compatible wheels as well.