I know I definitely haven't, I just created my first Peruvian characters recently. I have the most experience with Mexican, Venezuelan, and Dominican people I think, so those were my go-tos in the beginning.
Interestingly, I've never struggled with this, even when I was like 6. I think the trickiness comes from any mental divide where you think you're very different from someone, but people almost always have things in common. I grew up watching old cartoons and black-and-white movies, actually, in a lot of ways I've been an 'old soul' my whole life, and I just talk to whoever, regardless of the age gap, so old people and I actually got a long pretty well.
Now idk, since I don't speak the language in the place where I live.