Analyzing Cash Flow (using BP Rental Calculator)

[Zechariah Campbell]

I'm new to property ownership. Hoping to find a duplex so I can live in one side and rent the other or something with an ADU. I've only run a couple properties through the calculator so far, however, all of them are massively negative cash flow. For the calculator I'm using the mid-range of recommended numbers for things I'm not sure on like CapEx=10%. But for things like property tax, insurance, and vacancy rate, I'm able to find more accurate numbers online so plugging in those.

1. Does this mean properties are currently overvalued in the market I'm in, or am I missing something? 
   
   
2. How do others use the calculators to make purchasing decisions?