I bought a used Wacom One a while ago. It is a drawing tablet (not a standalone tablet as it needs to hook up to a computer). It has an display that you can use the stylus on.
You can find some examples of my bad art on mastodon:
Recently I finally determined how to turn on the pressure sensitivity in gimp. If you go to Edit->Input Devices, you can enable "xwayland-tablet stylus". (Obviously it probably has a different name if you aren't using wayland.) Once enabled the "Dynamics" setting in Tool Options takes effect. You can choose from a large variety of options.
For example, "Basic Dynamics" makes pressure affect opacity and velocity affect size. I've been using "Pressure Size" which simply makes pressure affect the size of the pencil (or other tool).
It probably hard to tell from this scaled down image but the lines for the eyebrows have a different thickness from the larger outer lines. I used to have to edit the tool settings to do that so this is nicer. I'm sure a trained artist could produce better output.