I can help you to get your permanent residency permit, if you are already some time living in Germany. Usually this requires stable income, some payments to the German Social Security, as well as other requirements.
I have ample experience on asking for those kind of permanent residency permits. If you can achieve this, then you have many advantages.
For instance you wouldn’t lose your residency permit because of unemployment, depending on the conditions you have you could stay longer outside of Germany without losing your residency, sometimes this kind of permits are required in order to ask for the German citizenship, if you get in trouble with the law and convicted of a crime this kind of residency are not that likely to be taken away from you as a normal residency permit.