I'd agree if he lost the electoral college since we live in a republic, not a democracy.
The United States has and always will be a representative democracy in which we elect officials who create laws rather than voting on laws correctly.
The popular vote is more of a measure of a nation's opinion than the electoral college which actively silences a good majority of votes.
If you want an example of this, voting in Texas and California is almost pointless as both states are strongholds for republicans and democrats. If you're a republican in California there's no point to vote as the state will be blue no matter what happens 99 % of the time and vice versa for texas.
The electoral college also puts way too much emphasis and power in the swing states and not in the rest of the states as demonstrated by this
graph which illustrates that the majority of presidential candidates concentrate all of their focus on swing states while ignoring the rest of the country.
Due to this, the electoral college isn't telling of the majority of the countries opinion of a president. Also taking into account Trumps
approval rating as of 2019 only being 41 %, this paints a clear picture that Trump isn't looked favorably by the majority of voters.
I used the 1980 article because it most accurately reflected the voters leaving the booths.
But once again you're still ignoring the underlying fact that the reason why Carter's presidency for the most part failed was due to him inheriting a terrible economy left to him by Ford and especially Nixon. Therefore you can't use this analogy as it doesn't fit in line with your overall point of economies literally collapsing in 3 years when the economy was already collapsing in the first place.
if anything, Trump's victory was a clear signal that the Obama recovery wasn't good or fast enough to propel Hillary to a victory.
Considering that Clinton won the popular vote and support from the majority of the country, voters agreed that Obama did a fine job as president.
Considering that Obama inherited the worst economy since the Great depression and managed to turn it around in the last 2 years of his presidency, I'd say Obama was successful considering the GDP growth at the start of his presidency was at -2.5 and ended at + 4.2, and the only reason Trump won was because of the broken system known as the electoral college.
Trump very plainly doesn't appeal to the majority of voters as demonstrated by his approval rating and him losing the popular vote. So to call the majority of voters " not buying Obamas liberal propaganda " is a gross understatement as demonstrated by the data which proves the opposite.