It’s funny, my experience is the exact opposite.
Having grown up in Germany i was surprised how many people in the US would strike up a conversation randomly in the street with me - I thought it’s a normal thing and never really experienced it in Germany - there I would always be suspicious that people try to scam me or get money or something.
I do agree with GP that in Latin America it’s super common and normal to chat with everyone.
But there are many levels to this - it’s for example less common in Nordic countries at least in my experience but you can speak to people in every place on earth, it’s something universal.