If I were to make a broad connection between the lack of trust in government, I would attribute it to the aging of the democratic institution. In the last 15 years, scandals around voting have been huge in many elections, and the advance of technology is making how the politicians run look antiquated and unrepresentative.
I think this is more of a general response against governments who don't have the capacity to fullfill their promises,which is something that the spread of technology has made more evident.
'Neoliberalism' or libertarianism has definitely put the state under the scope and has made the bar higher: governments around the world failing to address the issue of income/wealth inequality is a case for a smaller state, not a bigger one.
Being from Argentina, believe me I understand how Neoliberalism was used as an excuse for politicians to profit from selling state assets, but then how the solution to a corrupt institution be give that institution more power?
Much like the 2008 crises which was pinned on lack of regulation of banks: almost 10 years passed and no banker went to jail, and the rules are the same. Milton friedman would have said to let the banks fail, but the governments didn't, and that expectation is one of the causes cited for banks taking such large risks.
I have hopes for a future decentralized government, one where few dont hold the power of the many, and decisions are done more organically and interests can be better represented. The advent of technology is making that easier to achieve year by year.