Getting a denial letter in the mail is frustrating, but it happens to most...

https://dlf-ne.org/what-is-form-ssa-561-and-do-i-need-it-for-reconsideration/

Getting a denial letter in the mail is frustrating, but it happens to most people. Don't panic. You have 60 days to file your Request for Reconsideration using form SSA-561