Most of Trump's public statements are done through a company that he owns. That same company charges a modest $100,000 per month for early access to his posts; just straight up facilitating insider trading for the President's personal profit. Plus people might find the administration making decision in their favor while paying the $100,000 a month.
There's also Trumpcoin through which people can transfer money to the President. This just happens in the open. Remember when Trump had personal 1-on-1 meetings with the top Trumpcoin holders? I remember.
I've barely scratched the surface here. Trump's personal worth has increased $3,000,000,000 during his second term, so far.
Corruption has existed before, but it has never been this out in the open.