You may need to install steam-devices to get controller support to work.

I use Pop!_OS and have had zero issues getting my Nvidia GPU to work on it, so that or a similar Linux distro that has good Nvidia driver support might be worth checking out.

I use Actual. How it works is very similar to YNAB (you budget the money you currently have) but it’s open source and privacy focused. I started using it a few months ago and I really like it so far!