The Differences Between English and Spanish

Do you have a second Vietnamese personality, like a Vietnamese side and then a British side? I definitely find that I feel different when I'm speaking Vietnamese. It's also interesting that there's not really many foreigners who speak Vietnamese. So when locals are listening to Vietnamese spoken by a non-native, it's very difficult for them to try and understand. Because they're used to hearing Vietnamese spoken perfectly in a way,. fluently at least.