None of the individual fascist footsoldiers on the eastern front had political power either. Together they perpetrated a world-historical slaughter in the name of nation and race. I’m sure many of them would say the same thing. Perhaps some didn’t even support nazism, and were simply trying individually to get by. Collectively, they were nazism’s instruments regardless of their individual reasoning.

You individual calculus for supporting what you did does not matter here. It is less than a grain of sand on the tides of history. What matters is the political bloc you bound yourself to by your support, and the genocide that many such individual bindings served to legitimize. For one reason or another, you chose to become a single snowflake in an avalanche of death and inhumanity. The why does not matter, only the what.