How can you tell if someone is scamming you on the ᶜᵃˢʰ ᴬᵖᵖ? (Lost Money~Help Here)

https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC
https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC

https://support.google.com/edu/classroom/thread/338338940?hl=en&sjid=7472432616921740411-NC

How can you tell if someone is scamming you on the ᶜᵃˢʰ ᴬᵖᵖ? (Lost Money~Help Here)