Instagram is "another" social media sharing platform. Seems to be frequented a lot these days by photographers, but I do indeed recollect something about Instagram mostly being a platform to share smartphone images and offering fancy graphic "filters" to process the output of smartphones.
Personally I am not registered there, nor do I incline to really. In itself that is a bad decision as the platform is used to find paying customers by quite a few photographers these days.
As far as the images go, yes, places of beauty can be found in Germany. In fact, I will drive over 400km (single leg) to one of the most beautiful places I know of myself. Not sure if I will find a lot of oportunities for photography but I will certainly try.