Is the search engine suitable for making German content searchable?
Yes, you need to set
charset_table = non_cjk to include the non-asian charset. There is also German morphology processing, either by lemmatizer or stemmer (see https://manual.manticoresearch.com/Creating_an_index/NLP_and_tokenization/Morphology)
If you want to check searching German content you can have a look at our site https://myhealthbox.eu/de/ we indexed thousands of documents and German data.
Hope this helps.