you can show proof of funds, doesn’t have to be cash. Also they are not asking every traveller entering Thailand otherwise the queue would stretch for miles🤷🏾♀️ It’s relevant for those they pull aside for previous history too many extensions etc, the ones that could be working illegally, normal tourists -7-14 days average stay with onward travel shouldn’t be concerned
all airline crew have to pass through a dedicated channel at immigration, no need to tell them you are a pilot 👩✈️ unless you are not on official duty and in uniform.
As you have left the Country you applied from, yes they may cancel, they will know if you have left Germany and entered Thailand. Best wait to see if you get approved or not🤔