I really like the Bedtime Mode that Android has as a part of Digital Wellbeing. At a specified time, it will turn the screen grayscale, dim the wallpaper, etc.
Is there an equivalent setting or app for Windows? Bonus points if you know of a Linux equivalent too.
This right here. I’ve been using f.lux for years and years, more than a decade at this point. You can set it up so it ignores certain apps, specific displays on a multi-display setup, or all fullscreen apps. You can also fully customize the color temperature in addition to if, when, and how it transitions between cool and warm tones.
Can’t recommend it enough. It’s one of the first things I install whenever I get a new computer. I think it might also integrate with some smart home tech, but I don’t touch that crap.