Well, that's interesting you put us in the basket you think we fit, turns out there tons of liberals that are anti-vax Karens, are Christians and support second amendment, and want to be allowed to open carry, you should come to Oregon and Washington State some time, you'll be scratching your head wondering why you got it wrong, meanwhile I know many conservatives that don't like Trump but do support his policies, we have them on both sides, we aren't exclusive to any party and that's why elections don't always go as the media thinks it will, the people that are the loudest get the attention, but they certainly aren't the majority.
It's not mean to be a conclusive and comprehensive list of "These people go here, those people go there" but.. yeah, if I say to you "I don't think gay marriage should be legal" then it would be safe money to assume that I'm conservative, probably religious and possibly a Republican voter. If I said instead "I believe the government's only role should be national security and protecting property rights" you could probably bet on me being a libertarian, definitely an advocate for small government, supporter of capitalism, and (again) likely to be a Republican voter.
Yet, a libertarian wouldn't support a government banning gay marriage because it goes against the ideology - do as you wish as long as no harm comes to anyone. Likewise, a conservative Christian wouldn't be okay the legalising of prostitution or the easing of access to abortions but both are things that libertarians think should be legal and up to the individual as to whether or not they engage with such activities.
So why do they both likely vote Republican? It's because the enemy of my enemy is my friend.
Conservatives hate social progressives who want to open up marriage for gays, abortion clinics for loose women, and introduce tolerance of non-binary genders to schools. Libertarians hate social progressives because they think speech should be censored if they can declare it hateful, that gender quotas should be set to enforce diversity and representation on boards, and the government should spend more money on welfare - meaning more taxes. Social progressives lean Left and vote Democrats.
It happens on the Left as well (don't worry). Green voters and climate change advocates want to shut down factories, stop deforestation and put taxes on pollution emitters. But unions also vote Left traditionally, the same sort of people who are negatively impacted by factories being shut down, forest work being culled, and taxes on pollution being passed on to working class consumers. But the enemy of their enemy is their friend.
Green voters will voters will have to swallow their pride and vote alongside workers of dirty factories because they both have a common enemy in the Right-leaning capitalist who the Greens see as the biggest roadblock to address climate change, and who workers can't not shake the feeling they're being exploited by them when hundreds or thousands of frontline staff lose their jobs while CEO's, board members and shareholders all get a tidy payout from the money saved.
An NRA-card carrying, gun owning Dem isn't fascinating. Of course they exist. Of course anti-vaxx Karen's also have gay friends and it makes them mad that they can't marry in some states. There will always be anomalies or exceptions or outliers to the norm.
What *is* weird is that Conservative Christians who generally support the Republican Party *still* support it under Trump, a man who has a list of sexual allegations far longer than the Book of Genesis. He wasn't grabbing pussies because they'd hidden a Bible inside them.
It's weird but it's not unfathomable. Your two-party political system produces this.
tl;dr - how many unsuccessful presidential nominee candidates on both sides rigorously attacked the eventual winner during the primaries but then changed their tune and endorsed them once they won the nomination? Look at Elizabeth Warren and Kamala Harris grilling Biden, then turning around and saying "I'm backing him!"
Classic Lefties? Look at all of the candidates that ruthlessly bagged Trump during the Republican contest then sang his praises as he came up against Clinton.