Ways to talk about revolution, revolt, rebellion, mutiny, uprising, insurrection
Whether Mandos need a specific word for revolution or rebellion or whatever depends on which source material (and which *parts* of that source material) that you prefer to rely on. Based on what I've learned from the source material *by the creator of Mando'a,* while Mandos do have words for different *methods of engagement,* the *reasons* for participating in battles are almost an afterthought. (And they have plenty of those! See below.) Their culture is founded on war and destruction for no higher reason to participate in war and destruction. They have no need to make "war" sound "noble," because, to Mandalorians, all war has the potential to be worth participating in. (Granted, they — for the most part — are also a practical people, who hold no attachment to land, so they are willing to leave an area if it give them the chance to fight under better circumstances on another day.)
As for being hired guns, since I see Mando'a as a practical and versatile language rather than one rich with words, I disagree that, say, Jaster Mareel (even assuming that the language's author had written those stories, which is not the case) would have even used Mando'a to talk about the petty reasons that his group were being hired. It's just a job. The Mandalorians are just there to fight it, to keep in practice with their expensive and specialized gear, and for the money so that they can keep fighting with their expensive and specialized gear.
Choose the way of translating this concept based on the meaning you're trying to get across.
akaan acyk aliite: war between clans
akaan par am: war for change
akaan par alor evaar'la: war for a new leader
akaan par alor jate'shya: war for a better leader
akaan par tor: war for justice
akaan par gra'tua: war for vengeance
akaan par skira: war for a feud
akaan par majyc wadaas: war for extra/more wealth/resources
akaan par cuyir mav: war for being free
akaan par mavan: war for freedom
(Uses MandoCreator/Oyu'baat fan word for "freedom")
akaan par dinuir ijaat bal kote bah Kad Ha'rangir: war for giving honor and glory to Kad Ha'rangir, the god of destruction and change — the most Mandalorian reason for war