

Don’t get a tablet if you already have a Linux laptop or a dedicated workspace.
Get a drawing pad. They are better, more cost-effective, have a better feel (non-display versions), have better pens, and you aren’t restricted to neutered programs offered on android/iOS.
Wacom is traditional, but expensive and their pen tech is kind of aging at this point, but they always work flawlessly.
XPPen is the great value alternative (with even better stuff on the top end). i have an XPPen Deco Pro Gen2 and it is an absolutely great pad with the texture of paper, and their little macropad with a scroll wheel works well. The downside is that you need a screen, but it is quite ergonomic.
The few actual artists I know use the XPPen Artist Pro series which is a drawing pad with a screen, and then they just plug it into their laptop and close the lid. Not as portable, but generally as good or better experience
XPpen also has good Linux drivers. They work in the kernel by default often, but the macropad and pressure sensitivity customization won’t work globally without their drivers.
Especially because virtually all high megapixel country cameras have smaller physical pixel size and use pixel binning and combining to try to recreate a better image through computation where smaller megapixel cameras can have bigger pixel sizes and absorb more light, leading to better raw images. (Of course there are great and bad implementations of both ideas)