Sure, Trump is up way big with Republican Primary Voters. He is also up among minorities. At the moment, he is up a few points in a head to head with Biden.
But, when the poll is taken among voters who voted in 2020, Trump is down 27 points among college educated white people. Considering that the voter turnout in 2020 was huge, that is a huge number to overcome.
Those are the people that will vote for ANYONE but Trump.