As others said Switzerland. It’s beautiful and all but really expensive. It really took away a big part of fun when I went there. But not only that, I thought the swiss people seemed sometimes kinda "rude"or maybe a better word for it “cold” and a little annoyed if it came to tourists. I get it, it’s a small county and a lot of people are visiting each year, but it still wasn’t fun for me to be there and I wouldn’t recommend it to anyone to go there.
And North France near the German border like Strasbourg. The city and the region is beautiful as well, but the people are often like the cliché everybody knows and that sucks if you’re a tourist. But the south of France like Marseille and the Provence is always worth a visit. The people are chill, enjoying life in the typical mediterranean way and are often friendlier (and often speak English at least in the bigger cities/tourist areas).
Then you should visit south europe. Europe is divided by the alps in a lot of things, like potato or tomato as main ingredient in meals. But also in culture itself. Everything north of the alps is kinda cold and seems unhappy/angry and stressed all the time and south of it people seem chill, happy and friendly.