The first step
The cover letter is certainly the most difficult part of an application, since it is intended to arouse interest, similar to the introduction in a book.
In the cover letter, for example, it is interesting for us to know why you are applying.
In which direction do you want to develop, in which areas do you have special knowledge and experience or which activities and tasks motivate you.
We do not expect you to win the next Pulitzer Prize in literature with your cover letter.
If half a page is enough for you to express what is important to you, that is completely fine with us!