Harry Potter : God of magic system

our mc John is an orphan who is a part timer oneday after rescuing a girl he was killed by a gunshot from criminal. he woke up to find a goddess who tells him that there is a fault in god's judgement and he gets reincarnated into the world of harry potter with a system. he is excited to roam the world ,learn magic along with the system and get his love of life. join the journey of our mc and see whether he could reach the pinnacle and get a beautiful girl or else die tragically.