Well, I don't know about your nationality, but as a Korean person I found that the lack of CJK characters in a coding font is usually a non-problem, mostly because there are almost none that have them. (Apart from some local-company made fonts, Noto CJK Mono is almost the only one... which I do not like.)

Usually you just set a fallback CJK font and just not use my native language while coding - I just got better at English while writing comments in it.