Neither of them will make good presidents. Kamala Harris will be similar to Joe Biden. I doubt she will make any decisions on her own.
Donald Trump would have to figure out how he's going to please the Establishment while not antagonising his supporters. It's a difficult balance if he's president.
There is also the possibility of some major events that could change everything. For example, during the final year of Trump's first term as president, there was Covid-19.
Well mostly politicians don't make good rulers or leaders, it's probably just charismatism and hype and they're mostly liars. Well I hope they see how it'll turn out, but which of them seem like the necessary evil for you?
Based on track record, Donald Trump is better. This time around its hard to say which election result would be better for the people.