Learners keep circling the same question: should I learn a British accent, an American one, or Australian?
This is the point at which a very common assumption is worth re-examining.
Every accent brings its assumptions with it
Each accent carries a culture, and a set of prejudices attached to it in each place.
Live in Britain long enough and you notice that Americans here are often read as loud and lacking subtlety. Not because they are speaking incorrectly, but because an accent drags along whatever associations the listener already holds.
So when you deliberately imitate an American accent while not being American, you quietly inherit that baggage without noticing you have done it.
Your own identity is not something to erase
It is much like someone from Saigon living in Hanoi and keeping their southern accent. Who you are is not a thing you have to delete in order to be accepted.
What actually matters
The important thing in English pronunciation is not which accent you have. It is whether you are clear, natural, and understood.
That is what helps you in an IELTS speaking room and in real life alike.
Be comfortable with your own voice, and stop spending time chasing a standard you never needed.