There is no simple answer Zac, it would take many pages just to describe what is going on. I already wrote couple paragraphs here regarding this issue so it is pointless repeating everything...
We have to look at where USA as a country is coming from, at least the older generations, because that is sort of a background how many people are feeling and thinking... USA was different 2-3 decades ago, it was still fairly capitalist country. People simply didn't expect much of free stuff, freebies and handouts. People had to work for living. People used to believe in American Dream. At that time, USA was also fighting with Russia (Soviet Union), you may recall forty long years of Cold War.
Russians at that time represented socialism, where everything is basically owned by the whole community, all people. In this system, individuals didn't mean much, it was rather all about community (all people together). Russians wanted to advanced that system all the way to Communism, system in which perhaps money will become obsolete. A simple way to see it is that all individuals contribute to the whole system according to his best abilities, and each individual takes from the system only what he or she needs...
USA was based on different system, capitalism. This system is rather based on individuality, e.g. everybody takes care of himself or herself, without much support of the whole community...
Although it is over-simplified, it is important to understand the differences between these two systems. If you want to understand further read e.g. Marx's Communist Manifesto. Once you understand, it is much easier to understand differences between more liberal democrats and more conservative republicans...
At the end of Cold War, former Soviet Union collapsed and USA ended up being as a top economic, political and military superpower. Why was that? Because the capitalist system proved itself to work much better than the communist system. Former president Reagan simply won over Soviet Union by heavy military build up (read lots of $$$), and Soviet Union collapsed while trying to keep up with USA economically...
So, many of the older generations remember the power of USA. At that time, USA was economic, political and military superpower. USA had lots of respect in the entire world, many Americans were proud to be Americans. This was around 1990's...
Time goes on, couple years later there is a shift. Perhaps war in Iraq and unpopular president Bush gave rise to Obama. Obama is very enthusiastic and charismatic person, no doubt about it. But at the same time, he is community organizer. He is ideologist, and his ideology is not much different than ideology of former - you guessed it - socialistic system, system based on community as a whole...
Obama now during his years goes and apologizes everywhere for USA being so strong. Obama tries to dismantle the whole military, the military is at its weakest point (while countries like Russia and China are getting stronger and stronger). Obama spends trillions of dollars and has nothing to show for it at the end of his presidency. Obama doubles the debt, the debt he accumulated is pretty much equal to the debt that all previous presidents accumulated all together. Obama creates Obamacare, very expensive and inefficient healthcare system that is already collapsing under its own weight. Under Obama, hard working people are paying more and more taxes, and more and more millions of people are on some form of unemployment or government support. Under Obama, the economy is staggering, hard working people still can't find good jobs, they can't make good money, they have to work 2-3 jobs just to get by, they can't advance their financial situation no matter what they do...
But that is not all. Obama and his left hand Hillary Clinton withdraws from Iraq despite all warnings of all generals. This creates vacuum in Iraq, and we have a new terrorist organization called Isis... Those are very dangerous people, they hate the whole western civilization... These people are getting stronger and stronger under Obama and Clinton, they are killing left and right in those regions... Which causes mass exodus to Europe and USA, unfortunately among peace loving people there are also lots of members of ISIS... These people and their sympathizers are now causing lots of attacks in Europe, and in USA...
See what is going on? Because of the liberal approach of Obama, USA and the whole world is in lots of trouble. USA is much weaker politically and in more debt. Nobody respects USA today, other nation's leaders are laughing into Obama's face. More people disrespect laws in USA, more people are shooting cops... In stead of bringing people of different colors together, thanks to Obama there is more racism in USA than there was in the past couple of decades... USA is pretty much the highest taxed country in the entire world, the whole economy is staggering... Global Terrorism is on it's rise... Russia and China are expanding their military while USA is getting weaker. Terrorism is becoming something that people learn to accept on daily bases and so on...
And now we come to the new elections, Clinton vs Trump. What does Clinton want to do? She wants to continue with Obama policies, she wants to expand those policies further. More taxes. More open borders, more illegal immigrants in. Weaker military. More of the catastrophic healthcare system. More debt. More weakness. She wants more of the collectivism (socialist approach which fails over and over in different parts of world). In addition, everybody in USA knows Clinton is a liar and corrupted politician, if anybody believes that she is saying the truth, he or she must be just insane...
How about Trump though? Trump is the exact opposite. Trump wants to restore the military superpower, he wants military to be so strong that others don't even try to mess with USA because they will know that there will be severe punishment. Trump wants to stop the flood of illegal immigrants, among which there are many criminals, drug dealers, but also hundreds of possible terrorists. Trump wants to rebuild economic superpower. Trump wants to cut taxes, he wants to create lots of new jobs. Trump wants to eliminate ISIS from the face of this planet. Trump wants to create some healthcare system that works. Trump wants individualism, he wants successful people to win again and so on.
In simple words, Trump wants to rebuild all these great things that millions of Americans are missing. Trump wants to make America great again, he wants to make it the same way it used to be - strong, powerful, respected and rich... Trump wants people to respect military, laws, cops, USA, each other... Trump says it exactly as he sees it, he speaks directly to millions of his voters because they see it the same way... But that is not all. Trump is a brilliant businessman, he does have long history of DOING things, not just talking about them - unlike most of the politicians... That is why many people belive in Trump. How much he will be able to accomplish, well, we shall see...
Do you understand now where many Americans are coming from? Why the anger at Obama and Clinton, and why Trump won? Who gives a damn that Trump grabs some pussy here and there? Only liberals will make you believe that that is the important issue to talk about, only liberals cry because they lost, only liberals are demolishing and destroying streets - while claiming that Trump is the one who wants to destroy USA...