Textbook vs Real
Textbook부탁드립니다bu-tak-deu-rim-ni-da
Real제발je-bal
Why Koreans say it this way
One word. 제발 (please/I beg you) is raw emotion. 부탁드립니다 is a formal request. The difference: 부탁드립니다 is what you say at work; 제발 is what you say when your life is on the line.
From: 오징어 게임 EP9