A general overview of scholarships in Germany can be found here. In addition, there are two websites highlighted below that you can explore primarily.

• For international master's students, it is best to consider DAAD scholarship database.
• A good overview of institutions offering student scholarships can also be found on the Stipendium Plus website.

Many international students in Germany have side work. Besides scholarship it is also a good way to support yourself while studying.
International students have following options:

• Part-time work. Students who do not come from the EU, EEA or Switzerland are allowed to work 120 full or 240 half days in a year.
• Internship. For students who are not citizens of the EU, EEA or Switzerland paid and unpaid internships are also considered regular work and are subject to the 120 full/240 part-time days per year rule.
• Mini-job rules apply if the student earns no more than 450€  per month.

Deutsches Studentenwerk has a detailed overview and tips on to what extent you are allowed to work and where you can find a job: link