The financial burden of a stay abroad should not be underestimated (flight and living costs, accommodation, health insurance and possibly tuition fees, etc.).
As a financing option, a number of (partial) scholarships and travel grant programs are open to you, but the scholarship application is usually time-consuming and has a longer lead time. Applying is not a guarantee of success for financial support! However, you should still apply for the advertised university scholarships, as the chances of funding are much higher here than in the regular scholarship programs offered.
Tuition fees are also quite common outside Germany. (Education there is a personal qualification that comes at a price (students as paying customers).
Internship allowances are often in line with local benefits and should cover the cost of living in the host country. Please do not set your personal bar too high and accept local conditions.
Basically, you are expected to finance your stay abroad from the same source as your studies in Mannheim (own funds, BAföG, etc.).
You can find further information on the pages of the International Office.
For more funding opportunities, click here: