While it's certainly accurate to call former president Donald Trump a polarizing figure, that description tends to assume that about as many people liked him as didn't in the United States.
And indeed, his voting base was large enough to earn him a record for the most votes attained by both a sitting president and a losing candidate as well as passionate enough that he could often expect to be greeted by a crowd of enthusiastic supporters whenever he held a rally. However, this doesn't mean that his performance met the approval of the majority of Americans.
This is evident in the fact that President Joe Biden secured an electoral victory over him by setting a voting record of his own, but we can also see it in the difference that has already developed between their job approval ratings.