how tf do you ask for 🍃🍃 to a new dealer

how the fuck do you ask for substances to a new dealer how how how do i start with "hey may i have some substance please" or "hey may i please buy what you sell sir" 😭😭😭😭😭😭😭😭😭😭 i actually wanna die he added me back so i dont fkn know anymore im so scared