Kinda depends on how you are measuring it.

It sounds like you are just going by elected presidents, but quite a few were multiple-term presidents, and those presidents had multiple elections with different opponents.

And sometimes, a losing opponent would go on to win a later election.

Also, no one ran against George Washington, twice.

Out of 59 elections (if you include Washington), I think there have been 49 white guys and one white lady who have lost a US Presidential election at least once (and may or may not have gone on to be President in a later election).

https://en.m.wikipedia.org/wiki/List_of_United_States_presidential_elections_by_popular_vote_margin

I am exactly as fun at parties as you would imagine.

I like Kamala. You have a real shot at taking Trump out with her. The stakes could not be higher. Maybe for the world. He is a truly dangerous person.

I wonder if I can get the next statement out without venom coming back at me, but I'll say it anyway:

I think you guys should try hard to steer the rhetoric away from anything polarizing (race or gender), and do everything you can to create inclusion (from anyone). I'm seeing a lot of things like that, and I don't think it plays out into more support. And there's nothing more important now than maximizing support.

Only if you only count two parties.

Trump has also never won the general election for POTUS against a man but is undefeated against women so far, so let's hope that changes. For America, and the rest of the world, he better not win.

I have also never lost an Olympics, or lost a Formula 1 race, or lost a fight against Mike Tyson, or lost the Super Bowl.

Ignoring how meaningless the statement is in the first place, obligatory XKCD.

https://xkcd.com/1122/

I know she didn’t make it all the way to the general election, but I’d like to take a moment to remind everyone about Shirley Chisholm.

https://www.history.com/news/shirley-chisholm-career-milestones

45 and 1 white woman

I get the feeling in OPs post, but for those unfamiliar, there are more people on the ballot other than the 2 main picks. This even varies by state, as they can have different criteria for defining who makes it to the ballot.

So perhaps a black woman has at some point ran for president (as in, made it to the ballot at least)?

From wikipedia:

Charlene Alexander Mitchell (June 8, 1930 – December 14, 2022) was an American international socialist, feminist, labor and civil rights activist. In 1968, she became the first Black woman candidate for President of the United States.[1][2]

What really bugs me is that both sides are just attacking the other rather than talking about why they are the right choice. US elections are always about smear campaigns

Way more people than that have lost in the general election (hundreds, if not thousands), including Cynthia McKinney in 2008 as the most successful black female loser, but plenty of other black women have lost the general election.

Sample size too small, please try again in 1000 years.

It’s equally valid to say that a black woman has lost the election every time.

Edit: Vacuous truth