you will not stand a chance if you are not grown up in Germany/Austria/Switzerland or at least had the language spoken at home as your primary language.
I'm afraid but that's pretty much the reality, as a non native speaker you won't stand a chance. The same applies for LH cityline and Eurowings. And again, as already mentioned above, the pilot positions at Eurowings as well as LH cityline are filled with pilots from the LH waiting list and this situation will not change for the better in the foreseeable future.