while your english is understandable and perfectly fine, you have a few little quirks and it doesn't flow well. your short and to-the-point sentences are notable~
for example, let's look at your vm:
"all normal.how u know what my based language not english?"
it's rather blocky and doesn't flow~
"that's fine. how did you know that my native language isn't english?"
this is a little bit modified version which you would hear a native saying in a formal situation, but then a casual native would say
"you're fine! how'd you know i don't natively speak english?"
there are a lot of things to remember that don't quite make sense tbh ;-;