He won due to pure propaganda and a decades long plan to treat American citizens like cattle.

The masses are stressed, overworked, in fear of food/housing/health insurance.

They're also dumbed down from dismantling public education and brainrot of mass media.

Media is controlled by the owning class and the owning class is going to protect thier interests. They wanted a puppet in office they can head-pat to further hoard thier money like brainless lizards.