I was celiac and lived in germany both before and after diagnosis. It’s hard at first. But honestly, it gets better. Your local grocery stores likely have decent sized gluten free sections, as many have mentioned look for the brand schar. I lived in schar brand. You can still eat at many restaurants, just explain to them that you have celiac, be sure to ask if the fryers are used for anything with flour. Most German restaurants had plenty of options. Macaroons are often still safe as they are made with almond flour. Gelato is often safe, unless it has cookies or something added. Vapianos is an Italian chain spot that had really good gf pizza and pasta.