Trump didn't win the election, the GOP stole it for him.
The election was fixed by GOP operatives.
Starting in 2013 – just as the Supreme Court gutted the Voting Rights Act – a coterie of GOP operatives, under the direction of Kris Kobach, Kansas Secretary of State, created a system to purge millions of Americans of color from the voter rolls of GOP-controlled states.
The system, called Crosscheck, was finally shut down in December of 2019, when the ACLU took an airtight case to the supreme court, with experienced litigation.
We saw in 2016 Crosscheck elect a Republican Senate and as President, Donald Trump. The electoral putsch was aided by nine other methods of attacking the right to vote of Black, Latino and Asian-American voters, methods including “Caging,” “purging,” blocking legitimate registrations, and sending out voter registration cards that looked like junk mail in numerous states.
Voter suppression since 1988 when it became mathematically impossible for GOP to win, because of the higher percentage of women and minorities who vote. Voter suppression has put GOP in the White House since 1988. The only way Democrats win who typically don't show up in high percentages, is when enough of them register and show up to vote.
Voter suppression has been going on in the US since the 1800s, and nowhere more diligently then Ohio. That's for a reason, the US often follows Ohio's lead in national elections, being a key state in early election battles, polling and early primaries.
It’s not impossible for conservatives to win, they would just need a platform that appeals to a majority. Instead they choose to double down on the politics of division. It seems to work.