Yes. In principle, a German (or any nationality) can become a Jain monk. The key is to seek initiation (diksha) from a qualified Jain monk within one of the two main traditions, and to follow the rules of that tradition.

Key points to know:

• Traditions: There are two principal Jain mendicant traditions today—Digambar and Shvetambar.

- Digambar: Monks traditionally go barefoot and do not wear clothes. Women’s full monastic ordination is not universally accepted in all Digambar lineages. - Shvetambar: Monks wear white garments. This lineage has established monastic orders that ordain both men (bhikshu) and, in many communities, women (bhikshuni) in some lineages.

• For a man, both traditions technically admit renunciants, but the path and rules differ by lineage. In practice, many Western seekers who become monks in recent times have connected with Shvetambar communities because they often have more established structures for Westerners and for monastic ordination in some lineages.
• Practical route: The usual way is to contact a reputable Jain center or monastery in your region or in India, express your interest, and learn which lineage they follow and what the ordination process requires. You would typically spend time as a lay follower, receive instruction, and then undertake formal vows under the guidance of a respected monk in that tradition.

If you’d like, I can help you find a suitable Shvetambar or Digambar center or monk to contact in your area or provide guidance on how to approach the process.