Why is my English better than my Portuguese?

Hello, guys, I am 16 years old and I think my English is better than my Portuguese, is it normal for a Brazilian person?
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Are you sure?
Unless that you grew up in a country where the people just spoke english..
I doubt if anyone can talk about things in your mother tongue and the same way in another language.
Probably you write very well and can read alot of things, but I don't believe that the second language could be better that your mother tongue.