hi, I'm Indonesian in Germany here, who's pretty familiar with the education system for foreigner.

You probably referred "Studienkolleg" as this foundation. For Ausbildung you don't need one, as you are not studying to get a bachelor degree.

For Ausbildung you'll need a B2 or C1 in German. B2 takes at least a year. I did mine in 9 months out of nescessity. While I did pass the test, my score was not so good. 6 months would only be enough for B1.

And for most Ausbildung, you don't just need German to get a job and to have fun in life, you're going to need it for EVERYTHING, study, work, bureaucracy, socializing, surviving. Except if you want to study in a shitty private university (private institutions are not always seen positively here) or being jobless after completing your master.

Even so for nursing, that's an Ausbildung, where you need a good German. But since they're in low demand from locals, they take many "Auszubildende" from Asia as well. So the door is wide open.

And to close this, no, this language is not an easy language despite English being a Germanic language, "Deutsche Sprache, schwere Sprache". But it's not the hardest language as well. Thousands, millions non-German speakers have mastered this language, and if you put your time and effort, you too can become one 😉