Asked and answered a lot in various threads for years here.
For a display, an inexpensive Kindle Fire is your best bet. You can find a 7" for $50 or so US pretty easily.
I display my info here on a Fire 7 in a Home Assistant dashboard that displays weather data from a variety of sensors from weather station, AQI sensors, some indoor/outdoor sensors etc. Works great. My old dashboard is (here) - the colors change based on state so I can tell at a glance too.
If you’re running HA on the pi4 and ‘not’ running their embedded locked down HA-only os, a better option would be to add weewx to the pi4 and use the fabulous Belchertown skin to display on the kindle. Most folks like dark mode and running on a 10" display for the added real estate, but it works great on the 7" and 8" too as well as even your phone. Great skin and very simple to set up.
The Belchertown skin author’s site is (here) showing some nice tweaks he runs. The default skin setup is a bit simpler without the (cool) Hays charts.
If you have the pi4 and can add stuff to it, you have a $50 problem plus the cost of your time, but you can even use installing weewx+Belchertown as part of the learning experience. If you’ve battled through how cryptic and painful HA is to set up, you can easily do something as easy as weewx+Belchertown.
You can run weewx+Belchertown on any pi every built basically, if you have others sitting around unused, but a pi3 or later would be best. It positively screams on a pi4.