Hello Ms. @Mariam,
thank you for sharing your question with the Wefugees Community.
If you still get a little financial support from the Landratsamt or Sozialamt, you can apply for it in one of these offices. If you get no financial support from one of these offices, sometimes it is still possible to get a part of the money, you spend for your initial requirements in your new apartment; of course, if your income is not enough for these requirements. In this case, when you apply for the initial requirements (Erstausstattung) in your respective Landratsamt or Sozialamt, they assess your financial situation and see whether you have the right to get some help from them or not.
In addition, there are some organizations such as DRK/BRK or Caritas, which have Möbelkammer, from where you can buy the second hand furniture for your apartment with very low price.
Last but not least, in some cases, depending on the city, where you live, there are some organizations which have some budget for this. When you refer to them, they will assess your financial situation and after that they might help you with it financially. Please refer to a migration counseling office, such as to Caritas, Diakonie, AWO, BRK/DRK, in the city or region, where you live, and ask them about it, they may give you some good tips about it.
I hope, you have got your answer. I am a MBEON consultant. If you wish to contact me directly, you can see my profile and follow the instructions there.
Best wishes
Fardeen Noori