UART0 and UART1 Gpio’s are not configured in Polling UART Example Code…
You can use UART0 and UART1 with the default (reset) configuration of GPIOs. Look into AFC peripheral configuration   for the default mapping. As you can see into the table Uart0 is available on PA13 / PA14 and UART1 is available on PC02 / PC03.
If you want to connect UART signals to other pins you can change AFC config but this is not necessary for Polling example
I need to get an image from a camera in 1 uart and send this to S2E using another UART… Is this possible…?
Also how do I enable other UARTS??