Move to a less evil society. Better yet, move to a good society, assuming such a thing exists.

Otherwise, keep you head down. Do what the society compels you to do (pay your taxes, obey the laws, etc.) because there is no sense fighting against it if there is no significant chance of reform.

Beyond that, try to live as though you lived in a good society. Focus on following your passions, finding a romantic partner, getting a fulfilling job, and so on.