Despite having an 850 credit score, loans can be denied for reasons such as insufficient income, high debt-to-income ratio, unstable employment history, lack of savings, and past late payments. After rejection, one can find another creditor, get a co-signer, recover financially, or review and dispute credit report errors. A reconsideration request can be made if an error was found in the application. It's important to avoid financial changes while a loan application is pending.