In the recent past, bloggers have complained of an inability to access Blogger, because it was displaying in a "foreign" language.
The language seen would generally be the native language for that locale. Even advice to adjust the Profile Languages setting in the Dashboard was useless, because they didn't know the "foreign" spelling for their language. In one case, with a gentleman complaining from Thailand, I had no recourse but to suggest that he head to the nearest Thai Internet cafe, where he could hopefully find a friendly Thai native to show him the selection for "English", written in Thai.
Some time later, I observed that this advice was not quite so necessary.
You can now just go to your dashboard, and change the language setting on your own, without knowing the "foreign" language in question.
(1) I set my language to Thai, to see what would happen. This is what you'll see, when you're in Thailand, if you haven't set your language already. If you're not in Thailand, you'll see a different display - except for one key detail.
See the "gear" icon, in the upper right corner - and to its left, a pull down list? The list is the language selector.
(2) You open the pull down list, and find the entry, a long way from the top, that shows "English" as the secondary label.
The list is sorted in sequence by primary language name, at the convenience of the locals. Depending upon what the local language is, you'll find the secondary language names in a difference sequence - but all that you have to do is to find "English" (not "English (UK)" though - except for you Limeys - and Aussies are another kettle of fish!), somewhere in the list.
(3) You select "English" using the secondary label, and you're in business.
You may be able to avoid the dashboard, and use the Set Language wizard, directly.
Look at the language selector, as https://www.blogger.com/language.g. Yes, oddly, the language selector is still a piece of the pre 2011 Blogger dashboard.
(4) The Language selector, in Thai, is a little scary looking.
(5) As above, we see the same pull down language list, sorted the same, and again with the Secondary Language labels.
(6) Again, Select "English" as a Secondary Language entry.
(7) And, we're back to normal.
Which ever wizard you use, I will still advise all who stay in any locale where their native tongue is not predominant, to learn a minimum amount of the local language. And, if the locale involves travel, to prepare your Blogger / Google account, before you travel.