I know this is a pretty old thread now but I came across these posts wondering the same thing.
When i first started with ETS2 I found it really difficult and usually just used the park it option. Now after a handful of attempts I can usually get it in there a lot better, sometimes with just one attempt. I agree, it’s not the real thing, but this is why it’s called a simulator. I think if you can get the reverse principle/technique into your head then you’re part the way there when it comes to the real thing.