Ultimately the fault lies in Harris and democratic leadership who were in charge of the campaign. Harris got like 10 million fewer votes than Biden and you can't blame that on any one group. They made the conscious decisions that led them to have only a few million more votes than Hillary got almost a decade ago.

If someone is hell bent on a certain race/ethnicity let them know it can't purely be black or Latino voters fault if this is a majority white country. Are these people going to vote scold white people for sitting out or voting wrong? Democrats seem to lash out against their supposed allies more than the apathetic whites. They just write off the disengaged and target the apparently 20% of African American men that voted for Trump this time. Most of them still voted for Harris and if they went against voting for a black Democrat then she had to have a terrible campaign since that is one of the most loyal voting blocks in the United States.

Also, important to remember that Hispanics/Latinos aren't a coherent group within the United States. Some are fifth generation jet ski dealers that don't know Spanish and some are recent citizens who work as day laborers and need their ballot to be in Spanish. There's too much variety to tie them together like can be done with other groups.