@_elena I have located several #Misskey instances whose sign up is in English, but many people on those instances post in Japanese, Russian, Chinese (I think‽) & other languages I can not identify.
I also can not vouch on whether those instances would be a great fit for you as well (as I just discovered them).
If you have cash to spare, I do suggest running your own solo instance, as it gives you greater control over privacy (especially with private messages).