I think greed and corruption (cheating) by politicians and government employees has an outsized effect on this. Whenever you hear about it you lose trust and may even feel justified to cheat the system in turn. Basically they got there's, so I'll get mine.
IMO the penalties for corruption in public service jobs (all the way to the top!) should also be outsized to match the damage it does to society. I'm talking prison time. Also transparency at all levels and at all times. Public service should have really really good reasons to keep anything private and the default should be open to the public. There shouldn't be a need for FOI requests unless there's a good reason to keep something from being completely public.
Tough to do when those who write the laws are a part of the problem. What do you suggest to make this so?
Passion can be just as contagious as defeatism.