Isn't there a phonetic symbol in German?

Because the pronunciation of German is in the arrangement and combination of letters, there is no need to mark it. At first, you may use phonetic symbols of ai, eu and other letter combinations.

German is a spelling language. Just master the rules of letters and pronunciation. Except for some foreign words, such as Reataurant and Croissant, these words have phonetic symbols in good dictionaries.