as with many simple questions, this has a complex answer. let’s give the simple answer first and expand out from there:

1. the estxistence of a state throughout history has represented opression through violence. so, no, there is not a state i believe to be not opressive
2. i am also a realist. i understand that nearly all humans worldwide are subjects of states. the ones who aren’t are so skirted in in their pockets of uncontacted realms that they are still impacted by one state or another. at this current moment in time, i believe the state that treats people with the most dignity is probably Mexico, though i am biased by what i experience and am exposed to. i have blindspots and may be missing another country in another part of the world that is doing a better job to represent the dignity of all people everywhere. further, mexico, as with all coagulations of power, is vulnerable to what has happened to every state everywhere eventually: a total capitulation of all values in order to please the holders of power
3. there have existed non-state entities whose histories were largely wiped out by colonial powers. these precolonial groups histories still exist in the oral record and their ways of living are often the direct target of genocidal regimes. of particular interest to me are pre-colonial cambodia, puerto rico, ireland, hawai’i, and north america, however these stories of how idigenous people lived before the opressors came are hidden deep within many people’s cultural identities across the globe