First of all, you have to submit your foreign professional qualification from your home country to a competent authority. If the competent authority decides that a further qualification is necessary for the recognition and you can prove sufficient knowledge of German (A2), you can obtain the qualification required in Germany.
Visa for Recognition of Professional Qualifications
Can I obtain a visa to attend qualification programmes in Germany?
Recognition of foreign qualifications enables those who have completed their training abroad to work in their profession in Germany. The recognition process takes place at the so-called "recognition offices "("Anerkennungsstelle"). Occasionally, however, foreign qualifications do not meet all the necessary criteria for full recognition. When that is the case, you can attend a qualification programme in Germany, such as a technical training course or a job-related German course, and then have your qualification fully recognised. To participate in such a programme, you need a "visa (or residence permit) for recognition of foreign professional qualifications" per Section 16d of the Residence Act.