I did have a bit of a superiority complex in high school, but that’s because I was fluent in Japanese which was considered a “cool” language that basically no one else at HS was fluent in. But after that not much. Besides I don’t think most people would realize or care that I’m fluent in three languages

Now I live in a city where most people are multilingual and I don’t speak the local language (French) despite all the other languages I speak or understand so… I definitely feel inferior, but I don’t think that’s what you are asking

I am fluent in Chinese/Japanese/English; my Japanese got way worse after HS but I can still read news/play videogames and hold up a conversation. I’ve learned a bit of German and French so I have some basic reading comprehension