You can possibly try to take the Diploma in Teacher Training course, and then apply for the B.Ed. This is one big possibility, as there will be jobs available for even those who get the diploma itself.
Please do check with the admission procedures of Universities like the Madurai Kamaraj University, the Bharadidasan University and so on, where just a graduate degree itself is enough. There are so many Universities offering this course through correspondence and if you can contact a resource center in your local area, you can get all the guidance in this regard.
Now, another route is also available. Please do go over to the major metros, where there are good institutes or branches of the Max Muller Bhavan available. They have their own authorized institutes for teaching German. Once you go to the next level, that is, qualify yourself in German at an advanced level, it will become that much easy for you to qualify for a school teacher's job, as the basic qualification will not matter.
There are MNCs operating in India, and they require professionals with a very good knowledge of German, and those qualified can also find jobs as translators. Once you get this job, which is a very good job, you can then apply for a M.Com degree with any local University or the Indira Gandhi National Open University and get the M.Com degree in two years time. Once you go with two years of experience, you would always be picked up any good school. The Post Graduate degree will enable you to complete the B.Ed. After this, please do complete the M.Ed and thereafter, you can also possibly do the doctorate as well. This will even help you to switch to college teaching, as you will have enough to claim for your credentials. It may take five years, but that hard work will make you a professional.
All the very best.