Every home we've sold I have valued higher than my real estate agent valued it. We both valued it higher to the potential buyer than the appraisal came in at. Nobody accused anybody of fraud. But we could drop the price to what the appraised value came in, the buyer felt like he/she got a good deal, and we got a fair price for the sale.
But I have yet to sell a property that the bank or other lender accepted the value I, the real estate agent, or the buyer put on it. They have it appraised by their own appraiser. And they also run a full background check on our buyer's credit, criminal record, etc. to be sure he/she is likely to be reliable to repay the loan.
See how the free market works? No fraud. No intended fraud. You just do business to the best advantage that is reasonable.
And since Trump has not defaulted on his Mar-a-lago loan nor have the bankers accused him of defrauding them, you can be sure they did the same before loaning millions of dollars and were satisfied they made a good deal. If Deutsche Bank who did a lot of business with Trump relied solely on Trump's own financial statements to make loans, then they may have been irresponsible and might should be investigated for being careless with their investor's money, but they certainly had all the resources they needed to investigate his background, credit history and net worth thoroughly.