You hear a lot of stories about how Europeans dont really want “Americans” around but I didnt experience that.
More than 30 but not quite 40 years ago I spent some years in Europe. Already then there were plenty of places that we would go and the locals didnt seem to like us or want us there until they realized we werent Brits then they treated us at least as well as a local if not better.
I once asked a Finn on a social media site if I should learn some Swedish if I visited Finland. Since Swedish is an official language in Finland and much easier for an English-speaker to learn than Finnish, I figured that by speaking Swedish, I would not stand out as an "ugly American." The Finn replied that it would be better to speak English, since Americans are not disliked in Finland, but Swedes are.