Biden was essentially the same kind of establishment candidate that Hillary was; if Trump had not been distracted by culture wars, he could have employed the same playbook he used against Hillary to win re-election.
Except, again, Biden was never as unpopular as Clinton. "Culture wars" like COVID-related restrictions and riots were probably the only reason the election was even this close.
He also very much did try to employ the same playbook he used against Clinton, it just didn’t stick.
And the riots probably don't happen without COVID, at least not nearly to the same extent that they did in real life.