Nobody can tell you or any British- American- Canadian- or New Zealand-English speaking person that your pronunciation of any word is incorrect. That goes for all dialects contained within these countries as well.
The reason? English has never been "officially" standardized. Yes, you will find dictionaries and many other books in each country which lay out "accepted" or recommended pronunciation for that region, but none of this guidance is a definitive "rule."
In German, by contrast, there is a prescribed value and linguistic rule for how each vowel, consonant, and thereby, word, is to be produced and pronounced. In truth, no one in Germany should really speak dialect - that's never happened, thank goodness.
This delineation never happened in English, which keeps it something of a happy mess - which it's always been.