Dear Mousaab, where do you live in Germany? To find a flat you can either subscribe on platforms as, for example, Willkommen Flüchtlinge (fluechtlinge-willkommen.de/#) that help you to find a room in a shared flat. If you would like to live alone you can search for a flat on internetsites as ImmobilienScout24, Immonet, Immowelt. You can even look at EbayKleinanzeigen. If you are new in Germany I would recommend to get help from someone who speaks german and knows how the procedure works. There are also social workers who can help you with this kind of stuff.