I want to remind people that sharing ideas in this thread is about understanding the republican frame of mind. It is important to understand what guides people's decisions even if you don't agree with the wisdom of their decisions. Arguing that republicans are racist or misogynistic does you no favor, as these people don't view themselves as racist or misogynistic, and their vote counts as much as yours does.
These are the reasons that I have heard for people voting for Trump as opposed to Kamala:
Trump would do a better job keeping illegal immigrants out. Kamala supported policies that let illegal immigrants into the country. Republicans believe that illegal immigrants are an existential threat to America, creating a group who abuses social safety net programs, doesn't pay taxes, commit crimes, abuse drugs, commit crimes, create gangs, and are a bad influence for our communities as they do not follow Christian values.
The economy was better under Trump. Kamala's policies would balloon the deficit, cause inflation, increase housing prices, often benefit illegal immigrants, and are generally opposed as republicans don't believe that newer generations should receive large handouts like first time buyer grants as they didn't benefit from them.
Trump wants to keep the US out of wars and wants to force allies to pay their fair share in multinational organizations. Trump wouldn't be afraid to act aggressively and intimidate enemies. They want the US to be the world's only superpower and boogeyman.
Trump accomplished what many republicans wanted, which was to repeal Roe v Wade.
Republicans view both democrats and republicans as equally corrupt and think the government was unjustly used to abuse Trump after he left office.
Many republicans were extremely angry after what Biden said.
Many republicans do not think it is reasonable or necessary to create gender affirming structures in public. They believe that even if there may be some people who want to transition it is an extreme minority and creating a supportive environment would only create incentives for a lifestyle they don't want to support.
Many young people were influenced by social media for Trump because of the clout of the streamers and podcasters, or against the Democrat position because of the Democrat's refusal to move away from supporting Israel.
Regardless of what you believe, if you want the Democrat party to succeed it will have to align with positions that are viewed as creating a better economy and stopping illegal immigration, and move away from social inclusiveness as the primary focus, unless you can convince Republicans to change their priorities. It is clear that most Republicans know that Trump is a liar, a cheat, and does not put the country before himself, yet they voted for him anyways.