People seem to forget that majority of Americans are still white conservatives. The average white american still feels like slavery wasn't necessarily a bad thing, just a chapter in their long history. Obama was a one off and Biden Vs Trump was pretty much a sibling rivalry that had to be resolved in house (basically a "one of us" situation).
There was no way Kamala was going to win this election, also certain hispanic and arab minority groups also have their bias against someone like Kamala. Sad to say but the Democrats could have selected a more marketable candidate, don't get me wrong she's qualified but this is America we are talking about here, The Terminator was the governor of one of the biggest states in the country and I believe a reality tv host was once elected president.
It's not about qualifications, it's about who's relatable and most americans are like Trump, Christians when it's convenient (up until that "love your neighbour as you love yourself" part, that's when Christianity becomes woke), anti- abortion (until you get knocked up by the guy you've been cheating on your husband with), anti-lgbtq (until you need to sneak off to Thailand on that business trip), anti- black (until you need a few "Blacks for Trump" stooges on the stage with you...The name Blacks for Trump is just wrong on so many levels but that's a different topic all together). It's just a country full of despicable hypocrites.