Neoliberalism is an ideology that supports free market capitalism, and consists of two major policies: deregulating the U.S. economy so that the richest can engage in more financial speculation, and coercing weaker countries to open up their economies for exploitation by foreigners.
Neoconservatism is another ideology that supports U.S. exceptionalism, or the belief that the U.S. is exceptional or special because it stands for freedom and democracy, and any country it considers an enemy is evil and but be controlled or destroyed. Examples include Reagan's "evil empire" and Bush's "axis of evil," not to mention the Carter and Reagan doctrines as well as Obama's "pivot" to Asia.
The problem with neoliberalism is that it leads to instability and economic crashes due to financial speculation, which is what happened in 2008. It also makes countries that are weakened by U.S. coercion move away slowly from the U.S., which is what's been happening to BRICS and over forty countries that have become stronger economically.
The problem with neoconservatism is that it leads to a lot of suffering and death in other countries, and at the same time shows that the U.S. is run by hypocrites as it is revealed that they also fund their "enemies," such as arming both Israel and Saudi Arabia, funding both Saddam and the Shah of Iran, combatting terrorism that it helped promote, and trading happily with "enemies" like China.
Very likely most U.S. citizens are not aware of all of these points because both the news and entertainment (owned by the same rich that earn from neonconservatism and neoliberalism) have across many decades conditioned them to see the U.S. as exceptional and themselves as entitled. At best, they can only imagine that they belong to the "left" or to the "right" and debate on domestic issues involving abortion and gender, but are all dependent on the same consumer spending economy mostly controlled by the rich, which also funds both the Democrats and Republicans who have been promoting both ideologies since the Reagan administration. In any event, even if they thought they could do something about this, they wouldn't as they're too busy earning money, taking care of their families, etc.
Finally, the same applies to the global economy, which like the U.S. economy is essentially controlled by only a few corporations:
As anti-capitalist protesters take to the streets, mathematics has teased apart the global economic network to show who's really pulling the strings
www.newscientist.com
with money trickling down to the global population which wants to earn and spend more:
Hundreds of millions of people have been lifted out of poverty but can the middle class continue to grow?
www.bbc.com