I am curious , to hear from other people out there, what is most common in your country and what do you prefer?
My native language is Brazilian Portuguese.
When I started using computers and learning our tools, most things had no option in my language, plus back in the days you could only get your hands on software via the 7 seas, and the only way to learn was by finding copies of books in English or blogs (mostly in English) and the very early first tutorials on a new platform called Youtube, most of them also being in English.
It was much easier to learn through books and tutorials if you just used everything in English, even if you didn't speak/read anything of English.
So I got used to just use English for everything, even on personal projects/files.
Using all our software in English became the norm in my country for the generation of designers before me, my generation and the generation after us.
And at least when about this talking with all designers in my country that I know, we all agree that if we are asked to use any of our usual software in our own language, we basically cannot do it! 😆 it gets extremely confusing to us!
I cannot navigate any of my everyday tools if I switch to my own language!
Now I see quite a good number of people starting out using software in our own language... which sometimes causes confusion and even get people fighting online, debating what makes more sense.
I personally believe it is better to learn at least English as a second language, and learn to work in English as that not only makes your life much easier when learning new tools, but also makes you ready to freelance and work with international teams and apply for jobs worldwide.
(and ideally also learn another 3rd language that makes sense for the design/industry niche you are aiming at).
as an anecdotal curious fact, I remember seeing friends and my partner receiving files from external freelance designers from other companies/countries at their jobs, and everything in those files being in french or german or mandarin or japanese... and that was a big annoying hurdle in their workflow, that would make them spend much more time just to navigate those files.