No. They made a ledger entry for a loan to a customer and a deposit amount for most of it did not exists before the ledger entry was made.

If a bank had a way more deposits than they had loans, then yes it is possible that the money might have already been there. But under fractional reserve, a bank has to only have a small portion of deposits or other capital to cover their loan book. So it would not be unusual for a bank with a million dollars of deposits to have outstanding loans of ten million. The other nine million was created when the loans were taken out. The money is newly created deposit money when the loan is taken out.

Most people do not understand how banks work.

John