trump may have increased the % of minority votes that he received (Cubans in FL loved him), compared to 2016, BUT the African American voter turnout was significantly increased in 2020 - and that f'd him.
https://depauliaonline.com/51859/politics/black-voters-essential-to-democrat-win-in-georgia/
1.2AA in GA in 2020 - vs 500,000 in 2016. If trump increased his % from 10% to 20% (for example), he would have lost over 300,000 votes.