as a neurodivergent person, i often fail to realise that i tend to come across as rude or angry when I'm not paying attention to how i speak. and when i don't speak a language too well or when I'm out of practice, I'm especially prone to make mistakes with my tone.
for example i just asked the guy at the tea shop (in Tamil) "is this strong tea?" when he gave it to me. technically, it shouldn't sound like I'm angry or anything (and I'm not) but in the way Tamil is spoken, this basically translates to "is this even strong tea, you idiot?" and that was really not what i intended to say!