Tailscale offers a paid Mullvad integration, where you can select most Mullvad servers as exit nodes. Works quite well.

Would you mind sharing the code?

Revolut works fine on CalyxOS.

US != America

America contains the two continents South and North America

There are still many nice places to visit in America, I would just avoid the US.

Revolut still works well on CalyxOS.

For me it usually works to change server/country if a video is not working. Sometimes it takes 2-3 tries, and it is annoying.

I use 4 different European banking apps without issues on CalyxOS.

The reasons why clothes are so cheap are workers getting paid close to nothing and a complete disregard for the environment, health and safety.

You could try to change the sleep state from s2idle to deep. Not sure how to do this on Kubuntu though.

That’s already possible either by using a custom ROM or by connecting to a PC and using adb.