I think you could do it. You could totally live without Amazon. I did something similar, I moved to the middle of nowhere in Iowa after living in a giant ass city my entire life. At first I thought I would die. The nearest Starbucks is 40 miles from here. Once I embraced the culture I learned to not only make due but enjoy what I have. I also learned to do it all on my own. Grow my own food, build my own stuff, make my own coffee, et cetra.
You appear to be an intelligent woman and your writing is quite outstanding. Invest the time in research. Learn to embrace German culture. If you relinquish the conveniences and put in the work you’re sure to grow while learning valuable skills along the way.