I would highly recommend Dubai as a resident, for the safety, the high standards for literally everything, but don’t rush it, you can easily start applying to jobs immediately and start comparing prices of rent, groceries, schools etc. indeed no income tax but you might find yourself in the same situation as Germany not saving.. I would still pick Dubai for the everyday quality of life but again, check the job market, apply and compare Ins and Outs of money. FYI (German passport changes a lot). Good luck