Dear @Alijul143,
thank you for sharing your question with the Wefugees Community.
If you are living in a camp (Gemeinschaftsunterkunft), you can apply for it in your relevant Social Welfare Office (Sozialamt), (though in some states of Germany the application should be made in the Foreigners' Office). You can ask your responsible social worker in your camp. This social worker can help you write this application and he/she also knows if the application should be made in your Social Welfare Office or in your Foreigners' Office.
After getting the permission for it, you can **** for yourself an apartment outside the camp and if you find an apartment outside the camp, the rent of which matches the standards of your Social Welfare Office/Foreigners' Office, you can rent it.
Best wishes
Fardeen Noori