Asking for a friend here:
Is anyone else familiar with 2 player Risk including 4 x 'active neutral' armies?
It's definitely a thing, but maybe in New Zealand they gave us a superior set of rules to play by. I have the boardgame and the actual rulebook in case you're wondering.
Anywho - 2 player Risk with 4 active neutral armies is literally the best format.... For me to become the supreme conquerer that is.
The following is an extremely boring video which briefly explains the rules but doesn't really capture the wonderful essence of it:
(from 2min30sec to 4min54sec):
https://m.youtube.com/watch?v=F702AG1nBHc
Perhaps what I'm suggesting here is too technical or time consuming. Perhaps with guidance I could help out with the work side of things. Or perhaps - the 4 active neutral format only exists in an entirely different dimension of the multiverse.

