I have my browser set to English in a non-English country. Set your locale to what you are comfortable with reading. It doesn’t (shouldn’t) factor into things except the language the website displays. Unless you are Google, then it might just randomly pick a random language (my results flip flop between Portuguese and Dutch, despite manually changing the language back to English repeatedly).
What if I am travelling to another country physically where I don't read or write the local language? Would this affect my website access even if I'm connected via an IP inside the country?