Wacom needs drivers for Mac. The Volito's basic design [read cheap & cheerful compared to the majority of Wacoms] means it nominally interacts as an HID device, a mouse, so a pen will not work 'out of the box'.
Wacom never made drivers for OS X [well, they did but they were so buggy they retracted them]
'Word on the street' is that the Intuos/Graphire drivers would work at one time, but without a functional control panel.
…however…
I very much doubt when that idea was circulating that anyone considered how long the old Intuos/Graphire support would last. It lasted until El Capitan & after that there were ways of forcing it into later macOS.
That ended with Catalina, which will not run 32-bit software at all.
I think that's the end of the road for your venerable Volito.
I still have an Intuos II that I've managed to keep going up to Mojave, but that's it. No way to get it going on any later OS.
Refs I found on my journey…
https://www.thinkyhead.com/tabletmagic/ - a macOS driver for 'older Wacoms' - as it was last updated 2013 I think the chances are slim that it will work in Catalina or later. Might be worth a try. Edit: Forget that - it's for older serial port tablets only
http://hints.macworld.com/article.php?story=20040610095835241 - last updated a decade ago.