you're not looking at the correct rows. That 8% and 4% on the black row is being blamed for the whole elections while the other groups who voted at higher rates for trump are skating by with zero blame.
The lack of black male turnout is not the only reason. I've said before that more white women voted for Trump than Clinton.
However, if you are to analyze why she lost, several reasons would contribute to her losing.
-Drop in black male vote.
-Not campaigning in the midwest because she thought she had it on lock. Trump then swept the midwest. (PA, WI, MI)
-Former FBI Director James Comey coming out with the letter one week before the election staying they were re-opening the investigation into her emails. A lot of Dems think that helped Trump win.
-More white women voting for Trump over Clinton. (They did the same in the 2020 election against Biden)
-Not being a charismatic or appealing figure to any demographic.
-Not coming off as genuine or sincere.
-Drop in Latino Vote.
-The Russians, Trump campaign successfully convincing low IQ voters that she was just as bad, if not worse than Trump. Causing them to stay home aka voter supression.
-Jill Stein 3rd party vote.