Geez, looking at the OP. The political reality is that the leading Democratic candidates -- Biden, Sanders, Warren, Harris and possibly Buttigieg -- aren't strong enough to beat Trump. In order for Trump to lose in 2020, Trump would have to find a way to beat himself. Dems keep waiting and hoping that he'll self destruct, but it hasn't happened.
Trump isn't a role model. He's a boorish, straight-talking, banker, fratguy bully. He's never apologized for it. But conservatives still support him for a number of things he's doing, including pushing for border security, promoting the economy, pushing back on trade negotiations with China, supporting conservative judges, stopping federal funding for abortions, and a number of other conservative policies.
Actually, the fact that Trump isn't a polished politician leads to people believing he's sincere about what he says. People interpret Trump's brash demeanor as unvarnished honesty. They eat it up.
Democrats keep throwing coordinated tantrums over Trump's manner of speaking and personal behavior, but there hasn't been enough substance to their criticisms to make much difference. It comes across as prolonged sour grapes over losing the election in 2016.