I was in Amsterdam in September. Didn’t like it at all. The people seemed kind of short and rude with us. We had just came from Scotland where everyone was super friendly so it was quite a contrast.
Capital cities are usually like that it in Europe. They get plenty of short term tourists and do not cater to them. Secondary cities are pretty much always more fun/interesting, IMO.
Remember the same vibe in Germany. My last couple of years in Deutschland was among the best time in my life. I spoke German well enough that most I encountered weren't sure if I was an American: I definitely looked like a soldier with my short hair, but I spoke German with no accent.
I was aware of the various dialects, especially the Hunsrucker dialect where I lived, and Hoch Deutsch from the summer I spent in Northern Germany. I often would go North on long weekends to party with the really good friends I made.
Both areas had mostly small towns, and the people were very friendly.