Translation of mealy in German

The airport was huge, compared to Siem Reap's one, of course. We expected something similar to Bangkok's airfield but it was completely different. We stood in line for the passport control.
The bus driver drove so quickly and with extremely dangerous maneuvers. We were so afraid and the other passengers started to scream at the driver which did not help the situation at all.
I think I have to switch back to English. It will take me two years until I write an entire letter in German and I suppose I do not have the time for it. Does that mean that I am not serious about learning?