Welcome DD, what are some of the steps u went through to flip against islam, bangaladesh is registered as the second most religious country in the world. First is Egypt.
It was a very gradual process for me. I was at the peak of my religiosity in my mid to late teens. Early on I came to the conclusion that Allah didn't actively intervene in this world, otherwise he'd be cruelly and arbitrarily unfair. With hindsight, I realise that this must have been my very first step towards eventual apostasy. As with many potential apostates, hell was a very problematic concept once again hideously unfair to those who were born into other religions.
One thing that 'protected' me from apostasy in those early days was a relative lack of knowledge about my own religion. I knew how to perform the rituals but, while a believer I had not read the Quran in English and little little knowledge of Muhammad's life and how the Quran was subsequently codified. Had I known about some of these things, I was surely have left the religion earlier.
I gradually realised that there was nothing intrinsically special about Islam. Non-Muslims felt the same way about the truth of their own religions and gained the same satisfaction from them as I did from Islam. There was no rational reason for anyone to leave their own religion for Islam and it was quite clear that had I been born into a different religion I would also not be a Muslim.
As my scientific education progressed, I realised that an omnipotent god was not required to explain the world around us. I gradually stopped performing my prayers and other rituals and it came to a point where I had to face up to whether I believed or not - I realised that I didn't.
I pretty much continued to live a pseudo-Muslim lifestyle for a few years after - I continued to avoid alcohol and pork, for example - but full emancipation came when I dropped all of the cultural baggage. It was only then that I no longer felt like an outsider.