Arduino 2.0 has a serial plotter app that only displays 50 points. this expands the x-axis beyond usable for many signals.
(reportedly IDE 1.8.16 allos 500 points, but i have not investigated it)
After loading the Plotter library into your IDE, you must load the "listener" app into your host PC.
for my Linux system: click on Linux-64-bit on QuickStart page
arduino-plotter-listener-linux64.zip will be downloaded
Install this package ...
It is not at this time available in the Software Manger repository...
.
.
However, as a possible alternative, the Software Manager does have:
Tauno Serial Plotter, "for Arduino and other similar devices..."
Documentation/Homepage: https://github.com/taunoe/tauno-serial-plotter
Installed from Software Manager, and executed with:
$ flatpak run art.taunoerik.tauno-serial-plotter
successful so far...