Keyboard default language changes repeatedly
My wife and I have an iPhone X running IOS 12.2. We live in San Antonio, Texas. On a recent trip to Mexico we added the Spanish keyboard and also the Spanish Dictionaries (both Spain and Mexico) to our iPhones as we were doing lots of bi-lingual calling, texting and web surfing. In the keyboard settings the top is English, middle "Emoji" and bottom is Spanish. However, when I open Messages or Safari and email the keyboard shown is Spanish, not having an "n" but an "ñ". I can tap/hold the emoji icon and set it back to English but have to do it for every new text. This happens on both my wife and my phones.
Having Spanish as default was great in Mexico, but now that I'm back I need it to be English with Spanish as an option when I choose. Both my wife and I shift languages from English and Spanish to English often in same sentence (comes from living in a bi-lingual bi-cultural part of the world) in text and email. But we need English as the default. How can I make that happen?
iPhone X, iOS 12