Is the US heading for political disaster?

I have American friends who tell me that the sensible people of the United States will have learned the lessons of the 2016-2020 Donald Trump presidency and will not vote for him again in November, even Republicans who were happy to have him in the White House after the indecisive Obama years. So, why, if that's the case, is money still pouring into the Trump campaign coffers, why are polls suggesting Trump is ahead of Biden in the key states, why is Nato preparing itself for a second Trump term, why is Putin looking so pleased these days and why does Trump go about as if he is already the next President of the United States? Where are all these sensible Americans, why aren't they speaking out against the very idea that Trump could be returned for another four-year term? Is there really a silent majority of American voters who are saying nothing now but on the day will march confidently into the ballot booth and cast their vote for anyone but Trump? Basically, why is there not a nationwide outcry by sensible Americans against the possibility of Trump in the Oval Office once again? The reason is that most people in America probaby think it's no one's business but their own and they don't want to get involved until voting day, and even then they will stay quiet and won't reveal who they voted for. So none of the polls really reflect the mood of this silent majority and there are actually a helluva lot more Biden supporters around. If I'm right, then Trump is going to be beaten, and badly, in November, and the world, excluding Putin, will breathe a sigh of relief, and the big Trump donors will lose all their money and get nothng back in return. Ha!