Tokenizer for German lang

I try to implement neural machine translition model from scratch and now I choose tokenizer for languages.
I read what tokenizer has special Unicode Normalizer (NFC, NFD, etc.). I have a few questions for this normalizers

  1. Do I need to use Unicode normalizers for German or will any other one be suitable?
  2. Is there any additional information on unicode normalizers?

Thanks a lot for your help!