my little sister was born in Singapore. She was given a choice to become a Singaporean at the age of 18. Due to the fact that she would have had to commit 2 years to "service," she chose to waive that right. It can and does happen, depending on the country.
that being said, it would appear that English is not the OP's first language, so some of that may be lost in translation. Some research on her part would negate her query.
To some people. Meeting requirements for an LTR is NOT easy for most working people. My point is to the OP, which states how long they will be staying, not how long they want to stay. All of that is subject to approval and/or "meeting" requirements.
Have you bothered to look up your visa options on your own first? Just a simple google search will reveal what options you have available to you. Start there.